Carb ls idle timing. Im really familiar with the old school I run a carb, and my engine only has 9. 3 timing and gathering of thoughts 1 reading Jump to Latest 5. Exactly. unlock centrifugal weights & return This is my first time messing with a turbo setup and was looking for advice on timing on 93 pump gas. The dyno and track will tell you what the engine likes for timing. This MSD box is used to control ignition when installing a carburetor on an LS engine instea Carbureted LSX Forum - Timing for Carbed 416 LS3 - Hi, New to the LS game I've been doing road race carbureted SBCs for a few years and always ended up the distributor locked out at C5 Scan & Tune - LS2 402 & 236/240 Cam - Idle Transition - I posted this in the C5 Tech section, but thought I should try it here as well. It auto-detects the correct configuration based on the reluctor hey guys im newto the ls stuff I currently have a 5. I have heard that the rectangle heads like more timing than the cathedral port heads, as most every Setting the idle mixture and speed on a carburetor isn't the most exciting or elegant subject, but it is a necessary adjustment video goes through how to get your LS to idle after cam swapping it. It's also a good ide to log adaptive idle timing to see if it is PCM Diagnostics & Tuning - HP tuners - 5. It auto detects the correct configuration based on the reluctor wheel pattern, so there First thing you need to do is get the VE table right along with your timing tables (including idle timing). 08-0. 3 stock bottom end stock 706 heads with a vic jr intake and 750 carbcomp cams don't know specs except it has a 560. Mine is an aluminum 5. 0 with L92 heads and a comp cam. 16Hg of vaccum idle, Then the carb way,give it a ton of idle timing and pull it out an semi blend it or just ramp it right down to your max timing and treat it like a locked out distributor basically. The included plug in modules give you six different pre-programed timing curves to choose from based on how your LS engine is set up. . 3L, Brawler 650 DP) - Hoping to get some guidance / opinions from some experienced carbureted LS folks on how to fix my lean tip-in / stumble IDLE TUNING by Krambo and Rinkrat456 PDF A document that provides detailed instructions and images for tuning the idle settings of a vehicle. I know that there are several guys on this board with Advanced Engineering Tech - Ignition timing 101 - Allright, I see a LOT of mis-information on this topic. 0 and curious what timing people run to make cruising more What timing should I start with? New combo. E85 blow thru carb, drag only. head studs Cold start tuning is something a lot of tuners struggle with. This blog outlines the fundamentals behind it so you can get the perfect cold start tune. The idle area of your calibration needs tuning. Anybody have issues with Jackpot pulling timing at idle on an LS? Pulls so much timing that it doesn't want to idle. Doing the VE table AFTER doing all your idle stuff could IDLE TUNING Foreword by Rinkrat456: This article is literally copied and pasted from Krambo's Silverado SS page. When you modify that engine and fit a large aggressive cam, you need to consider what Setting Timing and RPM Limits with the 6LS. People really love these types of Iam new to the nitrous game with the ls stuff and would like some advice on how much timing to pull on my nitrous setup. How to Set the Timing When you think about it, setting the timing at idle speed makes no sense at all: You don t operate your car at idle, and timing changes as the rpm changes. Just started playing with HP tuners on my brother's 5. my total timing on the SBC was 36ish. 40-43 in both mine. I mean yeah we change timing table "x" amount of degrees but to me The idle airflow tables will have the largest affect for this. All that will effect idle airflow. Just Put as much in it at idle as it will take to idle the best. 0 compression before I put on the Dyno No map. on tim HOW TO: LS1 4. The differences between preignition and detonation. Make sure the MAF and VE table for fueling is good too, otherwise the idle My cam guy gave me a good set of baseline instructions for the timing on this LS3: It's best to yank a bit of timing out in the beginning, get your A/F right and then add timing little by little and the power will continue to rise to point. I have a 13-1 Technically tips, hints, tricks and experiences with coming old school carburetor on new school LS engines. This thread is intended Where is it? 2) I want to increase the amount of fuel on crank as currently it sputters to start and carb start works great to fix that. 5. With a cam, you lose VE down low so you need to increase the idle RAF. Do not power If you are intrigued by the power of an LS swap but don't want to mess with fuel injection, MSD has the answer with their LS Carbureted LSX Forum - Lean tip-in off Idle (5. Much of this is centered around the cylinder head itself. 0 ls engine for my Camaro project. Just started my combo up last night and it's not happy. Am I sapos to So I tune different LS based stuff regularly with the basic bolt ons ,cams cai's superchargers etc. From the 0-1,000 RPM range and at the low Airmass range of 0. I'm fairly adept in it but I have a project that I'm not OPERATION The MSD 6014 LS Ignition controller works with 24x/1x, 58x/4x and 58x/1x crank/cam configura-tions. Having the idle timing Forced Induction - Ideal timing for coolest engine at idle? - Anyone notice a real difference in idle coolant temps from say 10-32*? I've always heard low timing at idle makes more Carbureted LSX Forum - Carb'd LS1 timing issues - Long time lurker, first time posting. lift . I have tryed the Converting an LS engine to a carb might seem like taking a step backwards in technology, but there's something to be said for "tuning with a We show you how easy it is to convert a Gen III engine to a carb with the MSD LS6 Ignition-Control Box. The MSD 6014 LS Ignition controller works with 24x/1x and 58x/4x crank/cam configurations. I started out at 28 and bumped it up to 31 and it seemed to help, but the weather changed about 20 degrees too so its hard Hello, I’m building a 6. How much do you guys pull for 150, 250hp and up. 6. 3 6. 3 is set at 28. Just started it up, after doing a heads The Correct Procedure for Setting Optimized Timing and Speed Considering everything, the correct procedure for optimized timing can be done When we combine this response to cam swaps with the popularity of carbureted LS engines, one question comes to mind. Seems like converter is too small or idle fuel/ign needs tweaking if you are noticing a huge drop like that. Basic,really basic street stuff. 40 the timing is set to 13 Hi guys I’m wondering what is a good timing table for a LS 408 Carb with 12. Carbureted LSX Forum - Carburetors | Carbed Intakes | Carb Tuning Tips for LSX Enthusiasts I am tuning my first lm7 timing and am used to SBC timing. This is my first ls build and ran bbc with twin turbos for several years. I would like to get some opinions on the pros and cons of running a carb instead Rotary selector switch allows timing changes on the fly Nitrous and boost compatible Programmable step retard Fully Sealed direct plugin connectors 5 Things to Know About Carbureted LS Motors For cars that originally came equipped with an LS engine, it would be hard to justify ripping out the EFI SEE POST #8 FOR SCREEN SHOTS Found the right commanded spark for idle. Most fuel injected LS engines will make peak Have you checked actual indicated timing vs desired with a *gasp* timing light? intercooled or not? Carb or Injected? plug? ring gap and quench? Yes, all this shit matters, but I can tell you, Have you checked actual indicated timing vs desired with a *gasp* timing light? intercooled or not? Carb or Injected? plug? ring gap and quench? Yes, all this shit matters, but I can tell you, This may be a dumb question but this is the first time I have ever tried to verify timing on an LS motor with a timing light. To set the idle speed, locate the idle speed and adjustment screws With a stock LS, the factory idle speed will be around 550 - 600 RPM. Trying to figure out how much timing this thing is gonna like. 3 timing table vs LS1 timing table - Hey all. -20° is advance. Car has a timing pointer and ATI balancer. 3L LS through rigorous dyno testing to find out. LS 5. I've been tossing around the idea of selling it, The timing curve for a drag racer is different than a timing curve for a daily drive and its different whether or not you have a turbo ls or boosted ls and whether you have an NA engine. With the LS, But for an ideal idle mixture setting, a slightly leaner idle mixture is beneficial - roughly the equivalent width of the idle mixture screw slot. 8 5. So, lets start a new topic here. "Will go more" Expecting about 18 lbs of boost. 3) 9 times out of 10 we need to step on the throttle to get the engine to fire. Be careful of adding to much timing - it can give a great no load idle, but with any kind of load will become erratic. 7 LS make the best power with his 243 heads at 24-26° total timing, but every engine is different. 3l with this cam and seems like it runs damn good on the My buddies 5. Figure 2 PN 6014 Ignition Control Timing/Rev LS Series requires a 30 Amp fused power source. TB or IAC is too slow to really control idle The versatility of these programs is truly impressive, as they allow modifications of the fuel injector pulse widths, ignition timing, rev limits, knock I will never notice that 2hp. Then, check and set the idle speed. 61X lift cam to idle at 600 rpm at a idle I am considering building a 6. Timing does not need to LS cruise timing by Lshungy » Sun Mar 31, 2024 10:46 am Evening all , does anyone have experience with LS1 Gen3 cruise ignition timing numbers ? Engine is currently running fantastic Explanation of engine timing. I’m familiar with SBC’s and I utilize vacuum advance and have 50 degrees of timing at part throttle. Effects of spark plug heat range, compression, boost, octane, etc. Whats the rule of thumb on retarding timing per pound of boost? New to hi im new to this ls motor i have a 80 chevy malibu i just put a 416 ls stroker with 799 fully ported heads 11-1 comp pump gas motor 58t crank and the cam sensor in front of the timing cover Choosing a camshaft for a carbureted, single plane or short runner equipped LS based engine has some additional considerations to achieve optimal performance. Timing table is now 20deg@10lbs, Carbureted LSX Forum - MSD 6010 users. Just change the idle timing to get the sound you like. Also wondered how much boost I can run on pump. If idle after air mixture screw adjustment climbs, close linkage idle screw to recover 850 rpm and continue to adjust air mixture screws for max vacuum. New features of the LS Ignition include, high-speed data acquisition, an optional coolant temperature sensor input, idle timing control, as well as individual Car is backfiring and popping and snapping like crazy at idle and part throttle. Today we will be doing a triple test comparing the ls stock cam vs stage 1 and stage 3 cams in both idle quality and sound. Under engine/fuel/cranking fuel which of the options I've been reading that it's safe to add 2* of ignition timing across the board to a stock lt1, but i'm unsure as to what table/s I need to be looking at to change the ignition timing. The representation on the scanner is all in how they If the idle is still unacceptable then try adjusting the timing. Ls1 4. Spoke with my carb This video breaks down the MSD 6014 and 60143 ignition controls. 0 LQ4 CARBURETED M90 LS TEST-HOW TO: RUN A CARB ON A CHEAP M90 SUPERCHARGER! JUST CUT A HOLE IN THE TOP! My question; would it make sense that optimal timing for a given cam be the advance which produces the least amount of load at idle? Everyone is always trying to improve idle with cammed cars and Forced Induction - Post up your timing maps - So as I messed with the tune on my nova (365 ls3 heads,ljms cam, s475) . Running a carb on an LS is kinda unique in the sense that you can have analog air/fuel with a carb, but since there aren't provisions for a traditional distributor, MSD made a standalone Depending on the camshaft it may want 18-20 degrees or even 22-24ish degrees for a base idle timing to be happy. For whatever it's worth, I will very likely run a carb as a cheaper entry into the LS world to forego having to overhaul my fuel system and invest in an First, warm up the engine while it’s idling. What this does is make the idle mixture slightly leaner . New features of the LS Ignition include; high speed data acquisition, an optional coolant temperature sensor input, idle timing control, as well Anyone up the LS3 ignition timing? Tuning / Diagnostics -- engine and transmission The last couple of days I have been messing around with the idle parameters on HP Tuners. Are you running it closed loop? Are you using idle spark control? Is the timing in the idle area varied a lot, which can cause the engine to surge. Whats your timing set at? - I have a carbed 6. Anyway I was having trouble getting it to idle decent and finally Figure 1 LS Ignition Harness USE THE ARROW ON THE SWITCH FOR CURVE SELECTION. The cam all but dictates the Carbureted LSX Forum - Post your MSD timing curves! - Okay guys lets see what you all are running for timing! Mine is 28 degrees up until 3000 rpm's and then 32 degrees up to 7500 rpm. Fact is, the timing spec However even though its a newb question could someone please explain how timing works via HPT/Efilive tables. What custom tune are you guys running? I am ditching the chips So, you’re ready to finish off that LS-engine you’re building with a way to send fuel into your combustion chamber. Is mid to upper twenties pretty standard for an Set the AFR first and get it to idle close using the preset fuel base map and learning features if needed. 0 MSD-6010 msd-6014 TIMING CURVES, TUNING & TEST DRIVE LS swapped S10 BeeterOlds Garage & Budget Builds 19K subscribers Subscribed So actually you are 20* advanced @ idle and topping out at 35* advanced which is pretty normal:thumbsup:. Right now, I'm commanding ~23* of timing at idle in my base Does anyone have a screenshot of a LS timing table, either with a stock ECM, megasquirt, or Holley? Dialing in my Megasquirt 3 6. If I am on the brake a 3,000 it builds about 4 lbs of boost. The guide covers steps to configure What are you guys having your 6LS boxes set at for timing? Just curious so I can get a baseline for start up. 2K views 41 replies 9 participants last post by Scott Danforth Dec 14, 2025 I have a blow through setup on my ls build and just looking for a basic timing table. After some fine tuning I have been able to get my ~. 2 and I’m doing a distributor conversion with carb. My current timing on the 5. 3 swapped 91 firebird. Even after I set idle timing to 30 degrees just to see if it changes anything I have a with 799s, flat tops, cam, and super victor. Timing pointer was set up I have never seen an LS motor even a carbed one like more than 32* timing on motor. Then under cruse it is in the high 30's and as soon as it sees load the timing is pulled back to 28-30. At that point power will begin to fall off and Has anyone ran a cam like this? And what are your timing tables? TIA. 2) Idle to 1600rpms the engine is running pig rich, but as I take fuel away it becomes more and more difficult to start. 6:1 compression, so take this for what its worth: I run 36* idle to 4000, then ramp down to 34* at 5000 and 34* through the top rpm. I am looking at the 2011 Corvette LS3 stock idle timing table (Idle Base Spark Advance). We test different carb and intake combos on a Gen III LS engine to see what kind of power they will make - Super Chevy Magazine HOW TO: MSD-6010, 6012, 6014 IGNITION CONTROLLER. I have an 85' GT mustang with a carbureted LS1 in it. At idle, timing is the predominant avenue for controlling RPM and some fluctuation is completely normal. It'll die when shifting into reverse. Then Advance timing at idle from 16-18* upwards to find the highest MAP while By Richard Holdener One of the critical elements in any performance LS motor is cam timing. Setting up my power grid, Trying to decide on what timing to start with. I can make a 224 lope like a big cam and my 240ish cam idle like a stocker just changing the idle timing. 26 initial with 10 Timing in general drops down for several reasons, cylinder pressure goes up, and need to avoid detonation/pre-ignition, and it goes down as you approach idle. He is an HPTuners member on What makes the biggest difference when tuning an LS motor? 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