After getting the A/F right and playing with the spark tables we were able to get 251.4 hp and 285.19 tq on a dynojet. I feel like these numbers are a little low for the mods I have. What do you guys think?
After getting the A/F right and playing with the spark tables we were able to get 251.4 hp and 285.19 tq on a dynojet. I feel like these numbers are a little low for the mods I have. What do you guys think?
1999 rcss/2002 5.3, Ls1 cam, Ls6 intake manifold, Ported TB, NelsonPerformance tune, CAI, MSD 8.5s, Sanderson shorties, Magnaflow X-pipe, Maganflow 2in2out muffler(no cats), FLT lvl4, Yank 3600, B&M tranny cooler, e-fans, 2/3 drop, Truetrac, Trickflow cover, 3.42 gears, Caltracs, A.R. Irocs 18"x8", NS-2s(245/40/18), Nitto 555s(275/45/18) two JL 10s, 2" cowl hood, SS mirrors, SS bumper cover, step shavers, and Alot from Current Performance
1999 rcss/2002 5.3, Ls1 cam, Ls6 intake manifold, Ported TB, NelsonPerformance tune, CAI, MSD 8.5s, Sanderson shorties, Magnaflow X-pipe, Maganflow 2in2out muffler(no cats), FLT lvl4, Yank 3600, B&M tranny cooler, e-fans, 2/3 drop, Truetrac, Trickflow cover, 3.42 gears, Caltracs, A.R. Irocs 18"x8", NS-2s(245/40/18), Nitto 555s(275/45/18) two JL 10s, 2" cowl hood, SS mirrors, SS bumper cover, step shavers, and Alot from Current Performance
Cam may be holding you back. The 18's don't help with the 3.42's. Was that a 3rd gear run? Doesn't seem way low to me.
Are saying the little ls1 cam i put in there may be holding me back?(that would be cool if it was because im planning on putting the tr220/220 in soon)
And if i would to say put stock rims and tires on with maybe some 3 73s it would put down more on the dyno?
Last edited by lsxs10; 07-14-2009 at 03:43 PM.
1999 rcss/2002 5.3, Ls1 cam, Ls6 intake manifold, Ported TB, NelsonPerformance tune, CAI, MSD 8.5s, Sanderson shorties, Magnaflow X-pipe, Maganflow 2in2out muffler(no cats), FLT lvl4, Yank 3600, B&M tranny cooler, e-fans, 2/3 drop, Truetrac, Trickflow cover, 3.42 gears, Caltracs, A.R. Irocs 18"x8", NS-2s(245/40/18), Nitto 555s(275/45/18) two JL 10s, 2" cowl hood, SS mirrors, SS bumper cover, step shavers, and Alot from Current Performance
Actually the lower(numerically) the gears you have the less parasitic drivetrain loss there is. It's also the same with an aftermarket torque converter. 3.08 gears and a stock torque converter would make more power on a dyno than 4.56s and a ss3600 torque converter.Originally Posted by lsxs10
In short those numbers are way low. I normally don't care about dyno numbers as every dyno measures different, but in my opinion you should easily be over 300/300 rwhp or at least close to it even in this heat.
Might be the shorty headers, just a thought
No way that combo is close to 300 at the wheels with a stock cam. It's a 5.3 with shorties. I mean....really. Yes, a crappy converter and gears might make better numbers in certain situations but 3.42's with 18's and a 5.3 with a stock LS1 cam and shorties won't make 300.
I tend to disagree. Even though that ls1 cam is small depending which one it is, it could be almost a 10* increase in intake/exhaust duration which could be good for 10-15 rwhp. Even with the shorties, he's running almost full bolt ons and has less parasitic drivetrain loss being that he is in an S10. I've seen plenty of stock trucks dyno between 260-270 with just a tune and even with his mods(although not optimal) he should see at least a 20 rwhp increase over stock.
It's cool. N t sure why an S-10 makes the power loss less on a chassis dyno though. The rollers don't know it weighs less. Then again we have all seen dynos that run 10% or more less than "real" but real is tough to judge. I agree that there may be an issue but I don't think it's far off.
Don't forget he's running a 25.7" tall tire. Even though he has 18s on there that tiny tire is more than making up for its weight. I think Allen or someone had a dyno graph of a truck losing 80 rwhp with 35" tires compared to the stockers.
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