LS1 vs LS6 cam dyno graph
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Joined: Dec 2001
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From: Plainville,MA
Re: LS1 vs LS6 cam dyno graph
Does anybody have a before and after track times on a stock LS1 with a LS6 cam?
I have very few mods done so far!
SLP LM, SLP Y-pipe, Whisper lid, the free mods, and of course my used TNT kit! 
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Joined: Nov 2001
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From: Corona CA
Re: LS1 vs LS6 cam dyno graph
OK, I have this cam, check my sig for all the mods. Where should I be shifting? Right now Jayson from MTI has me shifting at about 6150, and rev limiter to 6200. It sounds to me like I'm leaving a lot of power on the table. Where do you guys suggest I set my shiftpoints? I have not had the car dynoed since I installed the cam, headers, and tr6's. We just used a basic safe tune to get me close since I would be shooting N20. I really need to save up some more money so that I can have the car retuned on the dyno with A/F readings, but MTI says that will cost another $200. You know it's funny I thought I paid for a "lifetime" tune when I gave them my first $550. 
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Joined: Aug 2003
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From: Vacaville, CA
Re: LS1 vs LS6 cam dyno graph My car really seems to come alive after about 4000 rpms, still on stock tuning so i have to shift at 6100, but it traps 107 
on street tires and shitty hydraulics that wont let me speed shift, but mcleod master is going in next week, but anyway, hopefully with headers ill be in the 12.70 or 12.80 range.
on street tires and shitty hydraulics that wont let me speed shift, but mcleod master is going in next week, but anyway, hopefully with headers ill be in the 12.70 or 12.80 range. 
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Joined: Mar 2003
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From: La Porte, TX
Re: LS1 vs LS6 cam dyno graph OK, thanks McRat, I will try moving the shift points up to 6600. Aslo what kind of timing should I be running with this cam? I haven't been shooting the nitrous lately, so that is not an issue. I want to get the absolute most I can out of her N/A first. Then I'm going to add a Ramchargers timing tuner for when I run the nitrous, and retard the timing that way. Reading through the post I saw someone say that the were running 27 degrees, and then I saw someone say they were running 22 degrees with this cam. Where should we have it set for optimal performance? Thanks.
Re: LS1 vs LS6 cam dyno graph
OK, I have this cam, check my sig for all the mods. Where should I be shifting? Right now Jayson from MTI has me shifting at about 6150, and rev limiter to 6200. It sounds to me like I'm leaving a lot of power on the table. Where do you guys suggest I set my shiftpoints? I have not had the car dynoed since I installed the cam, headers, and tr6's. We just used a basic safe tune to get me close since I would be shooting N20. I really need to save up some more money so that I can have the car retuned on the dyno with A/F readings, but MTI says that will cost another $200. You know it's funny I thought I paid for a "lifetime" tune when I gave them my first $550.
can you feel valve float?
becuz now that i think about it, i was feeling it but i was thinking it was something else. but if you can feel it then my puzzle is starting to come together.
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TECH Addict
Joined: Dec 2001
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From: new england
Originally Posted by HumpinSS
It almost feels like the car is stuttering and someone is taking their foot off the pedal.
I would run Comp 918 springs with LS6 cam, that would offset lack of "02" liteweight valves and keep cam out of float condition.
OK, thanks McRat, I will try moving the shift points up to 6600. Aslo what kind of timing should I be running with this cam? I haven't been shooting the nitrous lately, so that is not an issue. I want to get the absolute most I can out of her N/A first. Then I'm going to add a Ramchargers timing tuner for when I run the nitrous, and retard the timing that way. Reading through the post I saw someone say that the were running 27 degrees, and then I saw someone say they were running 22 degrees with this cam. Where should we have it set for optimal performance? Thanks.
HOLY old thread. DANG.
The answer to this question is, there is no definite answer. Every car is different. 25-26 seems to be the norm, but some cars have spark knock on stock timing tables which are close to this.
The answer to this question is, there is no definite answer. Every car is different. 25-26 seems to be the norm, but some cars have spark knock on stock timing tables which are close to this.
Gotcha.... because im currently street tuning the car. Its at 24 degrees right now
Remember that cylinder heads have a major role in determining spark timing. Ls6 have different heads, diff compresion if I remember right. I would just guess that the timing tables won't be far from a stock ls1 not closer to an ls6
For 6800, punch in 6400. You get 3400. Add the 400 slip, and the engine will be at 3800.
If you're gonna do the math, do it right.
Ease up, the guy was just asking a question regarding an older post. Why do some only feel that recent and or new posts should receive attention or comments. I am guilty myself for bring back old burried post from the dead. It is only because the question has yet to be answered....for me anyways. No disrespect intended....
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From: over dere
