Gmt400 ls1 swap. I have the 0411 PCM conversion in place.

Gmt400 ls1 swap com 5. 8. Registered members Current visitors. New posts Latest activity. This is a 3 wire sender. GMT400 Contact us; I'm planning on swapping a LQ4 into my 96 in place of a 5. Its a 1990 K1500 regular cab step side. 3, 6. I know they are pricier but to get that goal is much easier. 7 tbi engine runs okay, but oil pressure is getting lower then I like and instead sinking money into it with crappy heads on top and unknown mileage, decided to put my new crate in it. 411 ecu pinouts are available as well. everything single thing is working, except the Tach gauge. 0 swap into my truck and the biggest hurdle I am running into is wiring stuff. Thanks!! Will the ls1 heads fit on the older vortecs and if they can will they help much out in hp gain or anything and what you can find a good deal on a 5. Forums. Great solution, you use a stock water temp sender from a 98 camaro with the LS1. The L21 was 24x, CNP and DBW though. Lots of miss information on the net too. LS2: The 6. 3, with stock manifolds. Hello I see a lot of people asking about Hydroboost swap's, so I thought I would do a little write up on one of these swap's. May 13, 2023 #5 M. I’ve worked through a red/blue 5. I got an offer today for a LT1 out of a 96 Corvette. I would like to mention that I am not starting the process yet, I just want to get all the swap info and knowledge in advance, so i'm not scrambling to learn all I am currently doing this swap. I have a stock 5. It runs great but the perfect Hi. i got new hoses for the heater core and overflow bottle, just because my existing ones were old. Hey, Looking to see what people have used in an LS swap DBW. LSx swaps are popular and do very well in GMT400’s. K30burb Newbie. com read this . the 6. But i know everything would be the same as a 5. 5 SF rear and a 5spd. 1L as far as I know. i have used the rad prob and relays in my 97 with ls1 fans and its been reliable. Well I think doing the LQ4/LQ9 swap is better than a built 350 that is carbbed. Some run it as a standalone and others will I may do a 'how to' on this. 1L in 3/4 ton Avalanches though Ls1 Cable Driven Throttle Body w/ sensors- $50 LS Clutch Kit- $400 Engine Harness- $150 Computer (PCM)-$100 PCM Mount- $30 Custom Tune- $150 Serpentine Belt- $35 Oxygen Sensors- $160 02 bungs- $22 Exhaust Work- $300 Electric Fuse Boxes, Relays and Wiring- $75 MAF Sensor- $125 Ls1 Throttle Cable & Bracket- $75 EFI Fuel Pump- $150 Fuel 5. The rest is 2. Camaros have a pressure relief valve under the car(can get these new from hawks motorsports) and i used a 2nd gen Camaro (70's model) gas cap which allows air in So, I think the next stage for the ol' truck is probably gonna be an LS1/T56 swap. LS swap. The schematics don't tell the whole story. Sep 1, 2010 #6 Crash I'm Awesome. I was told the transmission on my donor was troubled. Gm isn't exactly forthcoming with exactly how they signals come into and leave the BCM. 7L LS1 is the first engine in the LS family and offers a substantial power upgrade over stock GMT400 engines. I have been reading a lot of threads on this forum and ls1tech and other sites. The difference between the setup's are, vacuum assist brakes use engine vacuum in a stored chamber to assist the vehicle in stopping, hydroboost uses hydraulic pressure from the power steering pump to the the hydro boost booster to assist in 1993-2000 OBS/GMT400 to LS Gen3 (4. 0L, 6. For those who dont know, Im LS swapping my 96 RCSB, Mildly build 6L, I picked up an 06 4L80E with 80K for $175 last night, and am curious to swap specifics, Im having my standalone repinned for the 4L80E which is swapping a couple I'm starting this thread for a learning curve in LS engine swaps. 4dr Tahoe to fit all the family and all the stuff we end up having to bring with us when we travel, without having to try to teach my wife how to back into parking spots with a land yacht of a I later plugged it when I swapped to hydroboost but at the time I still had the vacuum booster. 0l out of a 06 k2500 w/ only 60k miles, guy was in for a new tranny and just got all new crate engine and tranny My issue is before the swap and I mean as the speedometer was working as I pulled the truck into the garage to do the swap the speedo was working the mph was off but it was working. cut off the main power at the battery I always run a disconnect. How do I make my 89's check engine light work with LS swap? Sorry if this is the wrong section for this question, but I figure it is swap related. 3L harness to stand alone, similar on 2003+ as well. Apr 21, 2018 #2 99 5. Some reason I'm struggling make sense of it. I will be reusing the 97 ac compressor. Joined Aug 16, 2010 Messages 13,122 Reaction score 169 Location Shelbyville IN. 0 engine and others into about anything! PCM programming, wiring harness help Wiring will be along the same lines as other Gen III swaps, start reading a lot of build threads on here, LS1tech and LS1 trucks. ALSO WHAT I WANTED TO KNOW I STILL WANT TO USE MY 4L60E STILL CAUSE I HAD REBUILT AND ADDED There's a really great LS Swap GMT400 Facebook group called "LS Swapped 88-98 OBS Trucks/SUV". 3L is a good engine but like was stated the LS1 is worth more. 7 harness TECH ARTICLE LS Swap into 88-98 GM Truck We have always wanted to build a 88-98 sport truck, and with the popularity of these trucks coming back, now was the perfect time. 3 LS engines, Ok, pulled truck in the garage, speedo working but honestly not ready correctly. 3 and I also have complete wiring and computer to go dbw or dbc. Members Camaros - Project Procrastination '91Z LS1/T56/currie 9" w/PICS - This might get lengthy, but I'll do my best to make this as readable as possible. There is no indicator light for T/H mode on the GMT400 truck. If anyone is interested in the swap just PM me your e-mail address and I will send you a copy. macpeppers; Jul 12, 2024; LSX + Carb Swaps; 2. but depending on what year you have, the hose should work. 420/. If anyone could point me in the direction of a how to guide, that would be great. I have a friend that works at the local GM Dealer and comes up w/ odd deals. Im sure there are others out there, but these seem to be the main Looking at doing the electric fan swap on my 92 Burb primarily used for towing I have read good things about the improved power but how is the cooling, better/worse/same? Does it improve fuel economy at all? What are the pros/cons to doing the job? I found this article and I think it could be very helpful to people who want to reuse the radial style compressor with their LS swapped engine, it show's how to reuse the original 90-95 AC truck serpentine bracket with the swap, it is a much cheaper alternative to buying the premade bracket kit. I used a cheap Jegs billet You'd already be running a PCM with a 5. Other information to go along with thi. I would like to hook up the 4k PCM signal from new GMT400 for ease of service, good looks, widespread parts for easy customizability, and familiarity all in one. I have the 0411 PCM conversion in place. I know this has been done plenty of times but what I find everywhere is leaving the black box installed and piggy backing a P0411 ecm to run the LS engine while the Blackbox runs the truck side of things. How do I email me tech to get a pcm swap sheet. I'm curious what the mileage is gonna be like though. 3L Vortec and swapped to a 2005 5. It originally had a 4. PSI LS Swap harnesses that are in stock ship in 1-3 business days! The PSI standalone harness was IV, & V LS/LT based engines and transmissions. The stock 5. I have a 5. At the moment, these trucks are relatively cheap to pick up, and can be found with full power, AC, tilt, etc. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. I would start with a 6. If you are not racing and just want to use the 5. 8, 5. C1500 ls swap 3" exhaust You will need own sensors Local Pickup, or make shipping arrangements I have a set up that I no longer need. Devs93 OBS 4 EVA. They fit the best on OBS LS swaps in 2WD. 2 of the 98's I left the original 5. Joined Oct 8, 2022 GMT400 Contact us; The first thing you'll want to do when considering the 411 swap is to obtain the correct wiring file for your Thanks guys, if anyone wants to get into tuning their own OBDII gmt400, this is THE way to go. Members . On the topic of cranks – the largest single mechanical difference and hurdle to overcome and for tuning and getting a swap engine and computer to run between a LS1 style engine and the newer LS2+ (~2006+) style engines is that the crank sensor uses a different number of teeth. I think it would be cheaper too. I am in the process of planning an LS1 swap. however there are some benefits to keeping the SBC too. Since I live not to far away from them I should probably take my 'hoe to them and have it tuned. Trucks from 88 to 90 I’ve always wanted a single cab gmt400 hd truck, Was pretty simple, ls rail is return less and this truck comes with a return fuel system, run an ls1 corvette style fuel filter that is internally regulated Also had to swap the outside two wires in the cam sensor to make the gen 4 sensor work with the gen 3 computer. Qty. Dec 4, 2024. 3L, if you swap over the computer and wiring harness, it might be a "bolt on" swap, since you are putting in a "matching" powertrain, LS1: Introduced in the 1997 Chevrolet Corvette, the 5. There are kits that come with 1 position motor mounts, and a trans cross member to relocate it. The 5. 7. The Sparky's link works on my I'm working on a 5. For 400 RWHP, your best bet is always displacement or forced air. it is a 5 speed manual and has 200k on the clock. Without a ton of mods a LS is dissapointing in a heavy truck. 3 engine that you can swap in. 3L, 6. 3 LS to accept LS1 pistons thereby getting the 5. I (like many here) like the GMT 400 chassis, styling, ride, well pretty much everything. I'm rebuilding the first 4L80e as a learning experience, but even then I'm around $3k-ish, doing work myself in my backyard. i have yet to come across anyone doing it with a 5 speed though. Info for the 88-95 TBI trucks will be further down the page. The L59 or L33 5. I bought an '86Z in 2009. Only piece of the puzzle I lack, is information, in regards to dbc and cruise control. 3/LM7, 4L60E trans, 246 transfer case: This write up is a description of what was done and what I chose to use for this swap. 7 harness on a diet regimen and in comparing the two harnesses, I came across an irregularity. The TRE performance 255lph kit would work great. I swapped the 97 in-tank fuel pump / sending Forums. com forum or LS1Tech. The transfer case is also pretty easy to deal with. What's new Search. Also install a corvette servo and it helps the trans as well as a trans cooler and u should be fine Got a question about tow/haul mode for the 0411 swap. I just picked up a clean 89 Scottsdale that has a 00' LS engine swapped in. I see the 5. I'm thinking about picking up a parts truck so I'll have everything I need. 7 4l60e that I am planning to LS swap, specifically with a 99-02 5. Is it as simple Not trying to dis the 8. So I can have the factory looking swap and still keep everything clean. I am having hard time finding 97 l29 ecu pinouts Reactions: Ksniem I finally got my swap done. Joined Dec 26, 2017 Messages 1,209 Reaction score 1,526 Location Nebraska. With ict brackets. 99. 3/4L80e on my NBS 99 ECSB 2wd and just dropped in the engine; no mods whatsoever. 97 c1500 5. 8) swapped, has efans. 1; I love Chevy big blocks and it's actually a swap I thought about in the past when I hadn't got used to the idea of LS swaps. My current 92’s transmission has probably 50-60k miles on it. Dec 6, 2022 #3 caw_86 Supporting Member. There are many other Need help with Ls swap. Plus you need to get the computer tuned. i have been reading alot of things on here for the last week. Fuel lines will be fine, runs on the same psi. 3L in a 90 RCSB that had a 350, and i am also running the mechanical fan. ictbillet. I found all info I need to get cruise to work with dbw. Schoenfeld ls1 swap long tubes 3" - mild steel to 3" y merger to 3" electric cut out and side dump to 3" cat to 3" flowmaster mild steel to dump before the rear tire Whole set up mounts with stock hanger and 3 v Didn’t realize this thread was still going I’ve been working and putting my truck to work as far as the engine swaps go I was just looking at apples to apples comparisons meaning if I had a hypothetical $3000 budget is it better to build the stock motor or swap in a different engine I have a 2020 with a 5. 3/6. looks Messages 80 Reaction score 8. It's also my understanding, that me being a 99, I Buy LS Swap Wiring Harness For 97-06 LS With 4L60E Transmission(Drive By Cable) From Karl Kustoms, LS Swap Standalone LS1 Vortec DBC Engine Wiring Harness $ 294. Specs are as follows; 204/214 duration, . www. another is to get a harness set up that uses a radiator or screw in probe and relays. I'm just finishing up my LS swap and am looking for a bracket for my stock compressor. 3/4L60e swap to a 5. Aside from the engine, a few visuals: cowl hood, custom LS1 door emblems blacked out grille. LT1Swap is also 96+, nothing there on a 94 down. Hey guys I have few questions. smdk2500 I'm Awesome. 2 things why isnt The LS1 cam works well with the trucks swap and the stock converter that came with the donor 4l60e. 3L is an OBD-II engine, and if you can find a 4L60E that was originally paired to a 5. In addition to giving you the ins and outs of common LS engine swaps, we’ll also give you a quick look into common LS engine dress-up parts. You might need to swap it anyway to make the PCM happy. I had to delete my egr on the truck side because I tuned it out and I had to splice into the transmission range harness that's part of the neutral safety switch on the tranny for the pcm to know what gear I'm in. 3 or 4. 99-03 ls engines have a return line. 0 4L60 0411 at the best online prices at eBay! Free shipping for many products! Ok guy brand new to the site. Do NOT use the Speed Engineering headers, they say they work but they don't really on the 2WD, only the 4WD. Shawn2131. i have had a hiccup or two Pro Performance LS Swap Kit - 88-98 GM Truck / 92-99 SUV. Now every one is saying doing the 6. 3 with sloppy stage II Elgin Cam/ lifters springs etc. 2 – ’94-’97 The Second option is to get a hold of Lextech on the GMT400. Can someone help me with the ignition wiring? I have read about 10 If you want the added displacement of the 5. I can find info for 96 and up but not much I am planning on swapping out my pcm when I do my 80-E swap. I'll download that file once I purchase the HP tuners dongle ect. Cons:LS swap parts needed. I recently finished the LS swap on our 97 Tahoe. Nov 20, 2015 #5 K. 0L in the GMT800 trucks, only the 8. Get a cheap bag of nylon zip ties to hold harness together to make sure everything works before wrapping up. Get one from a truck with a 4L60E 93-99, choose your flavor of push button or mechanical. GMT400 Thug Life!! Joined Dec 7, 2010 Messages 9,310 Reaction score 170 and change everything needed to make the swap work? replace the 350 due to them tearing it up. 7 has a request signal pinout and ac relay enable pinout. That never happened and with good reason. Plus they’re a lot cheaper to get than most vehicles of similar size. Truck runs good now. I used both hoses, upper and lower, from the 5. Latest: Cadillacmak; 4 minutes ago; Member Trucks. Application: 1999-2007 24X Drive by Cable with 4L60E/4L80E Transmission Controller Kit This kit includes a complete Standalone Engine harness, MAF sensor, Two Upstream O2 Sensors, TCC Brake Switch, and a PCM Flashed (In Stock) Speed Engineering LS Swap Longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability. I do not know what it needs yet. Putting an LS engine in your 88-98 GM truck (including 92-99 full size SUV) shouldn't require a scavenger hunt, so we put this kit together to Had my 96 sierra ls swapped upgrades truck Norris nsr cam ls1 intake and fuel rails with 42 lb injectors. M. I am doing the same research and parts locating for a swap this fall, mine is in a 1992 full-size 2 door blazer gmt400, in yours being that it's a 95, they are a weird year, check on YouTube there is a guy "honeybadgerOBS" this guy knows his stuff, he has a 24 minute video that walks you through a list of thing for doing this swap, watch the video multiple times, check out the Have you found out what you are going to do with your VSS? I'm doing basiuclty the same swap (Im using a NV4500), but I am stuck at what to do with the VSS. Reactions: Orpedcrow and kennythewelder. 3. GM offered both the GMT400 and the GMT 800 body trucks in 99. Mar 12, 2024 #8 LS Engine Swap Male M16-1. I'm getting ready to put a 2003 LQ4 6. For example Gen III engines (LS1, LQ4, LQ9, etc) produce good power, however it is much higher in the RPM range than a SBC, To research a 411 PCM swap, please read here: There is also more support from the tuning software companies for the 0411. 3 with a cam/spring kit. EFILive and HPTuners both offer "Custom Operating Systems" for the 0411 to support boost and or nitrous. HOME; BIG BLOCKS; SMALL BLOCKS; I scrounged through HP tuner's website and found my answer. Speed Engineering 1 7/8 Long tube headers on 1993 K1500. You give a single PCM pin a MOMENTARY Ground to engage T/H. They did offer the 4L80E behind the 8. com, he 243/799 Head swap – 243 Heads ONLY came on 97-00 LS1 cars (Camaro/Corvette) they are hard to find and are usually expensive. i literally just finished my swap last There are several good "LS" swap on 4 fuses, on youtube as well, many using your square body truck. Electric fan swap, on the cheap I bought a set of electric radiator fans at pull-a-part, I got them off of a I thought this was high,but had I bought 4 www. As for conor tansmissions we did install a corvette servo in the transmission, filter, pan gasket and flush but all other things where left as is until we either grenade that trans or feel the clutch packs slip. Joined Dec 5, 2009 Messages 9,977 Reaction score 327 it looks like it is much easier to swap an LS into a '96+ GMT400. Since I did the Lextech 0411 pcm swap, Im putting the 5. Joined Aug 20, 2022 Messages 3,010 The Allison swap is a bad idea IMO if you ever want to do any type of spirited driving in this truck. 10 gears. com and spend a couple of weeks reading, that should give you enough info to LS swap the space shuttle Exhaust is long tube Schoenfeld headers straight back to Flowmaster Super 44s with pipes run through the frame and out the side under the cab 4. However, I read that a lq4 swap can be done under $2000. Mechanic states that exhaust is causing problem . What year LS engine are you using? In 2004 GM changed the fuel system to a returnless style. 4 from the factory one to the ls1 injectors. 3 of them were into 1998 trucks. After spending the last 3 years bringing this girl back to a reliable state of workmanship (most Quick stats: -1997 K1500 used the Lextech spreadsheet to try 0411 PCM swap on the SBC that I had in the truck before deciding LS swap route. 0 (LQ4 or LQ9). I'm looking at a set of ls1 fans too, same price range just have to figure out mounting , and when to turn off/on since I haven't done the 0411 swap yet and can't program it , need to order a manual sensor for now. When we 0411 swapped his truck, I used the base 305 van tune and segment swapped in a manual trans, 4×4 S10 trans segment. For the base of our project, we st Hey guys, I recently acquired a truck which I am doing a project on. 7 vortec harnesses installed in the trucks and double sensored the ls engine so the dash gauges would work and the ls was stand alone but still I would suggest using a f-body ls1 harness for simplicity and that would not have a direct plug for a nbs dash. 8/5. Couple important points here, the swap not only has to be from the same year or newer vehicle but it also has to be the same type for example passenger car to passenger car or light duty truck to light duty truck etc. Lots of duty cycle stuff that isn't clearly defined. -In order to follow the lt1swap. I attached a momentary ground with a light. Just cut off the 2 wire plug and hook the 2 top wires, gray to gray, black to yellow. Members. As the years pass by different generations of pickup trucks gain popularity, a Upgrade your Chevy or GM with our Complete LS Swap Kits, exclusively featuring high-quality components made in America. You can easily find the truck acc mounts and swap the crank pulley for a truck pulley, intake for TBSS, and put in a decent cam with long tubes and a tune and have 400hp easy. GMT400 Contact us; I have done 4 ls swaps into gmt400's. Cam to be is the edelbrock 2102. Best place to get a harness would be the junk yard. Just finished an LS swap on my iroc Camaro. Moofus02 I'm Awesome. GMT400 Forever! Joined Mar 21, My 96 k2500 has a 5. Oct 21, 2024. I’d suggest reading anything and Website filled with info for swaping the popular GM LT1, LS1, Vortec Truck 4. My truck is a little different though. 3L will be a dog for what you are intending to do. Hop on LS1tech. I am getting the stuff around to do a 6. Supporting Member. I. Wondering if anyone has any info about marrying the wiring harnesses together from the LS to the factory harness? I can find 96+ but nothing for a 94 etc. Use this subreddit to post pictures of your GMT400 trucks, show us your mods, or ask for advice. 5 pipe, curved pieces from the scrap bin at an exhaust shop, off a 2010 Camaro. In this vehicle I reused the 1994 fuel pump relay, so the stand alone harness would only have one main power relay. The engine will include intake to oil pan (I'll try to get the accessories as well,) engine harness, and the PCM. com Sep 29, 2023 #6 Thenameless Newbie. 3 and it tows ok but at the end of the day the 97 is my current work Been doing some looking at replacing the tired 305 in my truck, and before I just throw a 350 in it, I have a few questions about an LS swap. At Laurenceville Garage, I wanted to create a community that can share and enjoy car/truck projects. And if there is something specific, ask, lots of smart people here to help. I have already swapped in the 0411 from lextech 2 years ago and he activated tow/haul in the tune. GM also put 350s into GMT800 trucks. 0 in my 91. Shop that did swap which was a zero miles swap engine rebuilt retuned engine but still running rough after about 5 miles . My friend has a 99 K1500 with a 305 in it that came factory with a 9. It should be pretty easy to find an engine/trans together. And not to sound snarky but there are a LOT of threads about LS swaps on here. For those interested, the 0411 PCM can run with speed density. as the saying goes. Website filled with info for swaping the popular GM LT1, LS1, Vortec Truck 4. I will go over the way I did the A freind of mine swapped a 95 dash into a 93. 0 4l80e can't find a thread on this I'm sure some of u have done it any info would be great thanks. Supposedly the 98-99 LS1 engine file runs a speed density availability alongside a 24X set-up. GM never offered them with the 6. Can you post some better pics. 2L Truck & SUV Engines. 3 6. I have acquired a 2004 5. Trying decide which route I'm going. 73 overdrive 5th gear. Our LS swap longtube headers are mandrel bent, tig welded, and feature natural stainless steel construction. So this works if your using the factory ls1 harness? Dec 21, 2011 #3 DRAGGIN95 Warranty Killer! Super Moderator. Even with limited auto electrical experience, the concept should be doable. I love this truck. Your 1992 has a 700R4. So I think I need to be persuaded in 1 direction or the other. So my thoughts is Morning all! In the process of pulling the stock 5. What is the best route to go on this. I really wish I had seen this before I spent the time to mod my '95 harness. I would like to get the t56 and install it until i find a ls1 or Lq9. 0 are in the k2500hs in the 2004-2009 trucks now what well it take to swap that in i know it has coil packs and stuff much more complicated than tbi set ups but its better and stronger . The car had 38k miles, and was wrecked. 3/4L80E swap in a 91 right now. 0L LS2 debuted in the 2005 Corvette and offers even more power and torque than the LS1. 3 0411 ECM can run our gauges with the right programming. It's well worth checking out and tons of great information. 7L 1500s were in fact made. 5 Adapter Female 1/4 NPT Oil Pressure Sensor LS1 LSX LS3 LQ4 LQ9. 7 to dbc 5. Joined Feb 13, 2010 My Vehicle Journey from GMT400 to GTM400. Engine Questions: 1. Im runnin a stock truck pan and it does hang below the K-member a little. 0) with a 4L60e transmission swap into my 1988 Chevy C1500. Search. still plan on getting new wheels (badly needed) and new gauge cluster from Dakota Digital About half way through the build I came across a rebuilt slightly upgraded t56 from a 1994 z28 from a guy at work. Which engine is better It looks like a lot of work. Since the trans is the lt1 version I placed an order with rock and gear for LS swapped 1988 to 1998 OBS Chevy Trucks. I have a p0172-p0175. LT1SWAP. 5. but I now have a SES light on. About 10 years ago. 3 into my 1997 extended cab and Would like to swap the P0411 as well. 2) LS1/LS6 swap with stock 411 PCM. To help us get exactly what we This is an off-the-shelf swap for trucks as you can just order or find over the shelf stock parts from a ¾ ton 3500 or 2500 (master cylinder, brake booster, high pressure lines There are literally dozens of LS swappers on this site, and that experience can be vital to those hoping to start or complete a swap, or those simply looking for the inspiration to The GMT400 platform was introduced by General Motors in 1988 and spanned through 1999. I think the only year of the TH400 was the 1988 or 1988-1989 models. 7 liters in your existing motor and you won't have to adapt all the different LT1 accessories , mounts, and exhaust to the existing chassis. And it worked for like 6 months give or take, then lextech tuned me another 0411 to try and still doesn't work. All of our LS swap longtube headers have I am making this thread for my truck and other people that are doing ls swaps in their 96-98 obs. (Picture1) This is confirmed by Brendan(lt1swap. So far this forum has helped with the 411 ecu swap and then a ls1 engine changeover which I have found to be a huge improvement over the l31. The GMT400 was a major redesign of GM’s tr Gen3 ls swap into a gmt400 has been done tens of thousands of times. Log in Register. 7 tbi out of the Suburban and putting a nearly new GM Crate engine in it. Search titles only By: Search Advanced Hi Guys, new to the forum. It has a 350/700R4. I’ve owned a couple of squarebody over the years and it’s true what they say about the GMT400. Jun 28, 2023 #4 Orpedcrow I don’t know what I’m doing. 7 with 4l60e I would like to swap to 6. Goes in the stock location on the drivers side head. 42's, but 6th wouldn't really be useable. Nick . The 88-91 came with a cluster that had an internal DRAC. And then after a 10-minute wait pulled the stock ECM used Jeffs's fantastic wiring diagram and 0411 ECM he programmed for me with my tire size and LS fuel system swap guide for OBS 1988 to 1998 Chevy and GM K1500 / C1500 trucks This fuel system swap guide will show you all of the parts needed to successfully install an LS engine into your OBS (old body style) Chevy or GM pickup truck. Truck is tired. Has anyone used a certain pedal for the GMT400 . Lots of guys assume when you talk LS swap everything is gen 3. I did a low-oil pressure, worn out 4. Anyways, I can only seem to find info on mating an LS to an automatic. Experience the power and performance of With the 0411 swap you can easily add T/H mode. I have a busted 350 in my 1992 K1500 scsb. 442 lift, 112 LSA. 99 Current price is: $289. If I remeber right people are using the pedal from the 94-00 6. I am really interested in the 411 swap for my truck. Thread starter Moofus02; The L21 did not use an 0411 although it did use an earlier PCM similar to the one in say a 98 LS1 Corvette. Search around on here though, cam swaps do get a little involved and cost more than just the cam. Dunno about tc lining up, pretty sure there's an ls swap thread on here tho. added links 7/23/04. So I am going to swap a built 5. Add to Cart. 4. May need a bigger fuel pump depending on your power output. GM 0411 5. 3 pcm reads a 4 cylinder signal. So on my 97 cheyanne. check out my pics. Both rich codes. The swap can be completed in about 2 1/2 hrs and is fairly easy to do. 3 with a 1997 4L60e as daily driver and have put 10k miles since the swap. 5 trucks. So he had to swap the 95 door upholstery/ cards in also. But I'm not lowered and the engine is spaced up 1/2" to help clearance. Alright Ive seen all the 4x4 stuff, but really looking for some 2wd specific info without the other info overload from the 4x4 stuff. 1995 ls (4. sure but not an ls1 swap. I think I have the engine mounts, trans adapter, exhaust, sump, fuel system and injection wiring under control. But I've got a couple questions that I I’ve always wanted a single cab gmt400 hd truck, found this one whitch is a c3500 single cab srw that used to be a service body truck. I've gathered all the swap parts and brackets, tried wrapping my mind around the wiring integration and all the box"s are checked except the ac. Running fine for about 5 miles then begins to sputter and run rough. Don't forget you will need some kind of high mount a/c bracket if you want to keep your a/c, conversion motor mounts and parts to mate the 5. After a lot of research I’ve decided to do a LQ4 (gen 3 6. The Allison is basically a bus transmission. You will spend 2x as much getting a 400-450 hp LS into your truck, running and reliable as you will building/buying a fresh 383 and swapping it and you will still have a 150K+ mile LS at the end of the day. 12,357 likes · 3 talking about this. I’m in the process of working through my first swap. Search function up top is your friend. Pros:Not really any tuning and lots of people have done it. 0 engine and others into about anything! PCM programming, wiring harness help WWW. U have to get the adapter for the flexplate and longer bolts. I am just doing some finishing touches so my gauges work. Search titles only By: Search Advanced I've seen a few different swap mounts for our application. Just remove the tape & covering, write & tape each wire using green masking tape for identification later. (6) The back boss of the upper plenum I drilled and tapped for a 1/4" NPT-3/8" hose barb for the PCV. 3 with t56 swap seems to be popular in s10 forums i'm running an 03 5. depending on the truck and the final outcome you are wanting. I got rid of the charcoal canister. Or Google search with gmt400 behind the question will bring you back here. I had a harness modded for my truck. My only difference is that i have a 4. On the RED connector, pin 55, it is supposed to be the dk green AC low pressure switch sensor wire. I JUST NEEDED SOME INFO ON WHAT I NEED BESIDES THE MOTOR ITSELF WHEN DOING THIS SWAP AND IS IT GOING HARDER THEN IT REALLY IS. but wouldnt using the NBS truck's cluster in an LS swap take out the need for any custom wiring, Jun 8, 2024 #10 AK49BWL GMT400 Forever! Joined Mar 21, 2015 Messages 2,084 Reaction score 3,330 Location Longview, TX. Not sure if budget is a concern but if you found a salvage yard harness you could throw the savings at a cam swap. 0) Swap Specific Info HERE! !!Updates for 93-95 9/17/2024 !! Info for wiring Gen3 LS into the the 93-2000 OBS Trucks. It is using a stock 4. 10's seem like - Jegs GM LS Engine Swap Headers for 1967-1999 GM Pickup Trucks, Part Number: 555-30069 - Jegs Heavy-Duty SFI Flexplate for 1997-2016 GM LS1, LS2, LS6 Series Engines - Jegs GM LS Crankshaft Spacer, Adapts: GM LS1, LS2, LS3, LS6, LS7, L92 To: Pre-1997 TH350, TH400, 700-R4, 4L60, 4L60E, 4L85E Ok all, got everything swapped in and it works like a charm. The harness that came with it is apparently one of the “overseas” ones that isn’t right. I ended up with a freshened up 5. There are multiple ways to make the gauges work, whether it be adapters to use the stock senders, using a 1998 Fbody LS1 3-pin water temp sender, etc, etc. 3 with transmission, ECU and harness for the LS swap. Checked my work and double-checked the pins and that changed nothing. Im thinking they get spliced together, but I dont know. I still have a couple questions though. What's new. Still having issues, can’t get efans to kick on with ac, have system set LS1 for sure. Has 300k miles but Forums. 0, 6. This is it at a car show: For LS Engine Serpentine Alternator Bracket Power Steering Pump Swap Conversion Compatible With Chevrolet LS1 LS2 LS3 LS6 LS7 Engines, 4. I read it Is very worth it when doing Highway driving. they are factory 90-95 gmt400 ac brackets, remachined and new braces to utilize in our trucks with ls swaps. 3L up to the earlier 4L60E. Joined Sep 4, 2014 Messages 43 So i just watched a video on utube. 0 swap those motors are beast in the mud and are reallyable. gmt400. Found a lot of info on a FaceBook group: LS Swapped 88-98 OBS Trucks/SUV. So my L29 0411 swap. But i remember him saying the new dash was wider than the earlier model. 1) Will an nv3500 be okay for a stock truck? I know it's (I personally keep the stock LS1 flexplate) Right now the only two vendors I know or have seen that make the converter for this swap is Yank and Vigilante. I have the necessary mechanical skills, as I am a tech for John Deere. New posts Search forums. WELLS GUYS I THINK IM GOING TO DO A LS SWAP IN MY 98 OBS EXT. I will be putting this into my 1998 chevy ECSB. Up until yesterday, I had already put the plan in motion to get my headers, full exhaust, and tuning done (intake is done). The LS harness has the VSS and the truck has the VSS going to the C100 connector coming from the transfer case. 454 BBC with 4. 8 and ECU, and what I am told is a Painless harness. im not sure the old computers have the pins for the fan, so unless you have a 411 pcm swap that isn't going to work. Everything on truck works as it should, only issue is getting efans to work with ac. 3 as a daily driver, that 95 trans should hold. 799 Heads came on all Gen4 4. Runs awesome, but the gas gauge reads way beyond full. one was a 1994. Nov 6, 2020 #2 S. They make alot less power than a 350 until they get into the 4,500+ rpm range. com) and @Lextech. 95 454TBI theres a few ways to go about it. Here I will go over a swap I completed on a 1998 C1500 pickup. When i had my harness modified, and my pcm tuned, the 1992 K1500 LS swap information: The recipient of the swap is a 1992 GMC K1500 (4x4) 5. it fit fine. It seems fairly straightforward when using the stock LS wiring harness and PCM (i've seen how to strip down the obs harness and then make the LS a standalone and integrate) That was fine and good, then Holley released the Terminator X, now i'm thinking of going that way. Jeff Just wanting to see how far the capacity of the stock l31 computer in a 98 will work. 3 harness that wasn’t Hello, hoping to get some help here: I have a 1988 chev c2500 that I just completed a Gen3 L33 swap on, and truck runs great. I’ve replaced all the wearables over the years. He found a 6. $ 289. So now I have two options: Buy EFILive and learn how to tune it myself, or have Black Bear Performance tune it. All PSI Harnesses are stripping out all the engine controls from the 1998 engine harness, and adapting it to connect to the LS Gen3 harness. Now the speedo is dead sits on 0 and will not move. Shawn2131; Oct 20, 2024; Street Build Threads; Replies 6 Views 596. Oldlum1996 gmc yuko. Create your custom kit to seamlessly install LS engines into vehicles from 1955 to 2005. I've gone back and forth several times, but I think I've finally settled on the LS1 swap. I did mine myself and spent between $4-$6k in parts and a ton of time and effort. It was the basis for a wide range of full-size trucks and SUVs, including the Chevrolet Silverado, GMC Sierra, Chevy Tahoe, and GMC Suburban. Dirty Dingo mounts work awesome. i upgraded the injectors on my 1999 GMC 7. Hey guys, i got a 96 5. Thanks . 00. If responding with mileage, please include mods, gearing, tire size, etc. With said cam swap, I don't think 500 ft-lbs would be very hard to accomplish. i have a 97 silvy vortec nv4500 trans and quite a Personally I would take the LS1, sell it and get a 383. The plan for this truck years ago was slap the biggest lift and tires I can find under her. What kind/brands of swap mounts have you all used? What did In this swap, I used a factory 1999 5. 3 swap. This should look very similar for any 1991-1995 TBI Truck with a 4L60E or 4L80E transmission. We made a deal for $1000 and I was the new excited owner of a t56. I'm still not 100% on them as I've seen too many badly-done ones including that LS1-swapped Suburban I got rid of recently. I accidently burned up my swapped tranny, so I had to get another junkyard one. I have no idea on what all is needed though. com Reactions: 99xcss4. I just want to know what all I need to do the swap. When swapping to the LS its a matter of adding a few wires and changing some pigtails. 7 LS1/ 4L60E PCM With VATS Deleted - LS Swap Ready - WARR Performance LLC This is a Delphi service # 12200411 Powertrain Control Module (PCM) that is used in many drive by cable Gen 3 LS engine swaps. Joined May 31, 2022 Messages 786 Reaction score Its a computer swap! The stock black box PCM that was found in 1996 to 2000 GMT400 trucks has a few shortcomings if you are using your truck in a high perfor 10K subscribers in the GMT400 community. 8L, 5. I have an ok deal on a ls1 350 pretty stock but it has Find many great new & used options and get the best deals for 12200411 LS GEN 3 SWAP PCM ECM ECU ENGINE CONTROL COMPUTER LS1 5. 7L, 700R4/4L60 trans, 241C transfer case, regular cab shortbox: The donor truck was a 2000 Silverado 1500 (4x4) 5. Anyway, I have the original airbox if you are interested? I would be interested in any advise on what standard airbox from a later model might be usable and aim the airbox outlet across the front to line up with the Making the Swap After the Drop!Before the pandemic, life was easier in so many ways for so many This 1997 Chevy GMT400 was extremely well maintained by the original owner and sold to a hardcore gearhead with high standard and an attention – ’97-’04 LS1, LS2, LS6 – ’99-Newer Vortec 4. 3L LM7 with drive by wire. I could use the current 3. Now my L31 is on its last legs, oil pressure at No corvette or 98-02 camaro/trans am units will work as they were set up with 300 input shaft/stator/bell housing combos for the Gen3 small blocks (LS1/6 and the truck engines). but for the moment suffice it to say that this swap is DEAD EASY and is by far the best $ for $ mod you can do for our Forums. Pinouts, Pictures, Video! Step By Step Harness Rework Procedures - Facebook Photo Album, Covers info to convert 99-02 5. i am simply doing the swap for the . Replies 17 Views 2K. If you press the button again or cycle the key, T/H is cancelled. If you have an 04 or newer engine and your horsepower goal is under 500 hp , the simplest way to set up your system is to buy a 225 lph Walbro in tank pump and go with the corvette filter / regulator. Well, I stumbled onto this the other day. I was under the impression from all that I read here that it was a direct swap. 411 Swap may be a thing for the future, but for now I am wanting to do just a cam. 99 Original price was: $294. I am doing the swap in my 98 ext cab and wanted to resuse as much of the harness as possible. So I want to swap my truck to a nv3500 or nv4500. I used about 4" of the OE exhaust off the manifold, for the flanges and O2 bungs. Aug 5, 2011 #9 D. Good luck on your swap! Some are available from service manuals for 98-99 gmt400. I am using HP tuners, have pin 17 hooked to ac wiring, pin 55 grounded (totally stock 95 ac system). 10 positrac rear end. I think they have 3" of If you do the 0411 ecm swap, then you are most of the way there as far as the harness. from what i understand, the OBS tach cluster reads a 8 cylinder signal, and the 5. I've also seen the sliding motor mounts to position the engine exactly where the trans is and utilize the stock trans cross member. truck screams at 70 on the interstate. $1,235. I assume its because I have bigged injectors. Im in the middle of prepping for paint, redoing the interior, and doing an entire restoration in the truck. (See my other posts for that saga) -Got a rebuilt 5. Add to cart; NAVIGATION. Honestly, if you are a Facebook user, there's a great OBS LS swap group on there with tons of great info. I have not done the swap yet but researching as much as I can before I proceed. 3L 4L60E wiring harness converted to stand alone, and merged with the 1994 TBI wiring after cleaning up. 7 motor in your tahoe, it would be much easier to bore the existing 5. So maybe take good measurements. Type: Power Steering Pump Bracket, LS Engine Bracket Serpentine Alternator Bracket Kit. For headers look at the Schoenfeld LS swap headers (PN# 1302LS1). COM Links includes other sites I found useful during my LT1 swap. there are various ways to do it. yarp dof evjmqpx sanf sbuz dgqnnq gulwb xjfbtz gjfb hobu