MSD 6010 users. Whats your timing set at?
02-12-2013, 10:36 PM
#121
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02-13-2013, 10:06 AM
#122
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Yea runs really really good.. This is a 6.2 with a serious cam, so intake would be different.. It is running a GM intake single plane i am really happy with and an AED 750 HO carb.. which is a modified Holley that is great.. Maybe a similar intake with a slightly smaller carb would fit the bill for you .. I was told early on to get the MSD with the proper reluctor wheel hookup because its modifyable with a computer and some of the others are not.. But ask around here.. The harness on my car is run through the firewall through an aviation bayonet connector so I cut the thing and went a bit crazy on it, but i think it would have made it to under the dash, there was some wire there.. Here is a pic of the engine in there... I think the gas mileage is good, or not overly horrible or i would have noticed, but i have not measured.. Attachment 391182
10-01-2013, 07:20 AM
#125
Hello all I didn't want to make a new. "What timing should I run" thread so I'll just post here. I am near to starting my ls1 and would like to know whats a good timing I should start at and where should I take it. It's a 383 ls1 238/242 cam victor jr. Custom calibrated quick fuel 750dp carb. 12.5 compression. On e85 fuel. And what sort of afr gauge should I get? Any help is greatly appreciated. Also when I get it running I'll make a thread. It's not your everyday lsx swap
11-05-2013, 08:27 AM
#126
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any blow through guys ive read this whole thread and looks like everyone is running NA combos. I would like to see what you blow through guys are running for timing. im in the process of putting together a blow through lq4 based 408 with a procharger.
11-13-2013, 02:04 PM
#127
Heres what I wound up with on my LS3. GM crate LS3, GMPP dual plane intake, Fast EZ efi, Bullet Racing custom grind 220-230 at .050 on a 108+4 w 629 lift both sides. Extremely mild and drive able combo with a 2004R, 2800 stall and 3.42 rear gears. This curve works great with my setup. car ran 11.65 at 118mph, blowing the tires off to a pedaled 1.876 60ft. Notice the dip in the curve. I do that around the peak torque of the engine to help with piston speed at max efficiency . I am going into the MAP timing thing this week and am still a little confused on what to do, but I will look through whats on this thread and get it figured out.
12-03-2013, 08:21 PM
#128
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Hi everyone, new to the forum i currently reside in Australia and the info is there not like this site though the info on here is unbelievable, anyway i have a question i have just built a carby ls1 wich i am about to fire up over the weekend and was wondering what timing i should be looking at using car specs are as follows
03 ls1 241 heads with a victor jnr, cam 227/231 112lsa and a 750 holley h/p has a manualized turbo 350 3800 highstall 3.5 gears in the rear and the car only ways around 1200kgs(2640 pounds in your language)
any help would be appreaciated
03 ls1 241 heads with a victor jnr, cam 227/231 112lsa and a 750 holley h/p has a manualized turbo 350 3800 highstall 3.5 gears in the rear and the car only ways around 1200kgs(2640 pounds in your language)
any help would be appreaciated
12-30-2013, 07:40 PM
#129
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Hi everyone, new to the forum i currently reside in Australia and the info is there not like this site though the info on here is unbelievable, anyway i have a question i have just built a carby ls1 wich i am about to fire up over the weekend and was wondering what timing i should be looking at using car specs are as follows
03 ls1 241 heads with a victor jnr, cam 227/231 112lsa and a 750 holley h/p has a manualized turbo 350 3800 highstall 3.5 gears in the rear and the car only ways around 1200kgs(2640 pounds in your language)
any help would be appreaciated
03 ls1 241 heads with a victor jnr, cam 227/231 112lsa and a 750 holley h/p has a manualized turbo 350 3800 highstall 3.5 gears in the rear and the car only ways around 1200kgs(2640 pounds in your language)
any help would be appreaciated
Somewhere between 30 and 36 seems to be the norm from 1000 and up. Some dip at HP/TQ curves, some dip in the upper RPMs due to piston speed.
Some just flat line it.
Need to see what yours wants/likes.
01-04-2014, 11:57 AM
#130
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hey new to LS1tech... i pretty much got the timing down packed but i want to know how many people actually mess with the MAP side of it. Kindof stumped on what to set map at or how it affects the timing thanks in advance
01-11-2014, 06:35 PM
#131
So I just finished my build and so far I seem to have a stumble off the line. After 3k it just screams but 1 gear should be roasting the tires but just doens't. Wanted to see what everyone would recommend in timing for my setup as well as any other recommendations.
It is a stock 6.0 iron block lq4 with l92 heads, comp xr281hr cam, fast ez-efi, gm single plane intake, msd 6010, 4l80e with a 2500 stall, 3.42 gears
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[/QUOTE]
It is a stock 6.0 iron block lq4 with l92 heads, comp xr281hr cam, fast ez-efi, gm single plane intake, msd 6010, 4l80e with a 2500 stall, 3.42 gears
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01-19-2014, 05:13 PM
#133
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02-23-2014, 09:55 AM
#134
Because of my large ish cam the idle speed between N and D has a pretty extreme spread if I keep the timing linear.
So what I do is the timing starts kinda low at 400rpm but ramps up very high between 500-600 then it drops off to a more normal 20 or so at 900-1100
What happens is the timing is a little weak at idle in neutral but when you put the trans in gear the timing advances as the rpm drops and as a result tries to kick the rpm back up. Using this methiod I'm only getting a 200-300 rpm drop now.
02-23-2014, 12:04 PM
#135
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I do something similar but instead of at cruise I do it at idle.
Because of my large ish cam the idle speed between N and D has a pretty extreme spread if I keep the timing linear.
So what I do is the timing starts kinda low at 400rpm but ramps up very high between 500-600 then it drops off to a more normal 20 or so at 900-1100
What happens is the timing is a little weak at idle in neutral but when you put the trans in gear the timing advances as the rpm drops and as a result tries to kick the rpm back up. Using this methiod I'm only getting a 200-300 rpm drop now.
Because of my large ish cam the idle speed between N and D has a pretty extreme spread if I keep the timing linear.
So what I do is the timing starts kinda low at 400rpm but ramps up very high between 500-600 then it drops off to a more normal 20 or so at 900-1100
What happens is the timing is a little weak at idle in neutral but when you put the trans in gear the timing advances as the rpm drops and as a result tries to kick the rpm back up. Using this methiod I'm only getting a 200-300 rpm drop now.
02-25-2014, 09:32 AM
#137
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Like I said if it works for you and you accept that then sweet. But theres
ways around this.
I just dont want people to go thru this sticky, see your fix and think thats the only way their engine will run.
Last edited by 89gmcs15; 02-25-2014 at 10:13 AM.
02-26-2014, 06:12 PM
#138
My car now idles PERFECTLY, only drops 200rpm going into gear, it doesn't burn your eyes or stink, it doesn't stall under rapid rpm drop, it's very responsive to light throttle inputs, it's even not especially cold natured and it only took me an afternoon of carb tuning and a few clicks of a mouse to make it happen. Not bad for a cam that'll barely run power brakes.
Last edited by krochus; 02-26-2014 at 07:42 PM.
02-26-2014, 06:26 PM
#139
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Did I imply or say ANYTHING TO THAT EFFECT? I merely offered up a perfectly useful tip to help some folks out should they choose. I'm sorry that it took you a few months of carb tuning to get your little cam to idle in gear. If you think you can get a cam that pulls less than 10inches vacuum at idle in N to not suffer from a big RPM drop going into gear with carb tuning alone then have at it! Cause that makes you one of the best carb tuners in the HISTORY of aftermarket camshafts and I take my hat off to you.
My car now idles PERFECTLY, only drops 200rpm going into gear, it doesn't burn your eyes or stink, it doesn't stall under rapid rpm drop, it's very responsive to light throttle inputs, it's even not especially cold natured and it only took me an afternoon of carb tuning and a few clicks of a mouse to make it happen. Not bad for a cam that'll barely run power brakes.
If you want to stay stuck in the 1960's and treat the wonderful piece of equipment that is the 6LS like it was an old dumb distrubitor where timing only goes one way then by all means do so. But don't act like others are doing something wrong because they choose to utilize the technologies flex ability to help solve problems
My car now idles PERFECTLY, only drops 200rpm going into gear, it doesn't burn your eyes or stink, it doesn't stall under rapid rpm drop, it's very responsive to light throttle inputs, it's even not especially cold natured and it only took me an afternoon of carb tuning and a few clicks of a mouse to make it happen. Not bad for a cam that'll barely run power brakes.
If you want to stay stuck in the 1960's and treat the wonderful piece of equipment that is the 6LS like it was an old dumb distrubitor where timing only goes one way then by all means do so. But don't act like others are doing something wrong because they choose to utilize the technologies flex ability to help solve problems
I lose less than 100 rpm (more like 50 rpm) in gear and idle at 850 ish.
I was just tryin to help ya out.
Last edited by 89gmcs15; 02-26-2014 at 08:00 PM.
02-26-2014, 06:38 PM
#140
There is no amount of carb tuning in the world that is going to make a 109 LSA cam idle with the quality of a 112 LSA cam. It's common knowledge, every cam manufacturer will tell you this. Ignition timing can offset this somewhat to not take advantage of it is folly
It's no different that the way fuel injected engines use ignition timing as well as the IAC to maintain a steady idle. The msd box even has an "idle timing control" function that you enable when used in conjunction with EFI so it can adjust idle timing for this very purpose.
It's no different that the way fuel injected engines use ignition timing as well as the IAC to maintain a steady idle. The msd box even has an "idle timing control" function that you enable when used in conjunction with EFI so it can adjust idle timing for this very purpose.
Last edited by krochus; 02-26-2014 at 08:16 PM.