Very mild L33 dyno results
Very mild L33 dyno results 05 L33 5.3 with baby comp cam xr269 212/216, no other mods or bolt ons.
Results on dynojet, corrected, manual trans.
358 whp at 6100rpm
339wtq at 3200.
When I went looking at the L33, not much info was out there, so hopefully this helps someone. Basically, with the tiny cam it is at stock LS6 power levels (415 crank).
Results on dynojet, corrected, manual trans.
358 whp at 6100rpm
339wtq at 3200.
When I went looking at the L33, not much info was out there, so hopefully this helps someone. Basically, with the tiny cam it is at stock LS6 power levels (415 crank).
Stock engine right down to the iron manifolds.
Stock truck injectors (max at 90% duty cycle)
The for mentioned cam XR269 with 918 springs.
All smog stuff, and A/c still installed.
We could have got a little more but we pulled it back slightly for a safe tune.
Last edited by fuzzyjk; Jul 20, 2013 at 08:31 PM.
Just another note for those using the DBW. I was concerned the Vette pedal would not comunicate with the truck TB, MAF, ECU, ect. They talk just fine. I did need to swap a few plugs but nothing to re-pin and it went together like it was meant to work together. Lots of miss info on the internet about this. I ended up purchasing a Vette TAC mod at nearly $300.00 that I did not need and worked for hours trying to modify the truck pedal to work when the Vette pedal or monte pedal for that matter worked just fine.
2247Lbs car + 415 crank = one pretty quick car. There are two turbos sitting on my bench earmarked for this car but I am reconsidering going with the boost. I have a H/C Vette with 451whp and this 358whp car make the Vette feel like a Chevette.
2247Lbs car + 415 crank = one pretty quick car. There are two turbos sitting on my bench earmarked for this car but I am reconsidering going with the boost. I have a H/C Vette with 451whp and this 358whp car make the Vette feel like a Chevette.
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manual trans versus auto
likely much lighter wheel/tire combo
end result is tuned
exhaust is pretty well guaranteed to flow better than stock truck
manual trans versus auto
310bhp L33 * 0.85 (15% loss through a manual) = 263rwhp
358-263=95rwhp gain
likely much lighter wheel/tire combo
end result is tuned
exhaust is pretty well guaranteed to flow better than stock truck
Didn't not realize how you were coming to your estimate, I assumed it was based off truck real world results.
You are assuming the 310 rating from GM is highly accurate and that the dyno is not a happy one.
Here is a dyno of a stock l33 in an Extended cab short bed truck (found here: http://www.performancetrucks.net/for...-specs-369537/) :
So it looks like in a truck it managed to beat your theoretical power number. 267 times 1.1 to get the extra 10% drivetrain loss back puts the car at 293rwhp.
This drops the estimated gain to 65rwhp from a cam, manifold back exhaust, ls6 intake, and tune. Still sounds a tad high but not out of the realm of possibility IMO.
You are assuming the 310 rating from GM is highly accurate and that the dyno is not a happy one.
Here is a dyno of a stock l33 in an Extended cab short bed truck (found here: http://www.performancetrucks.net/for...-specs-369537/) :
So it looks like in a truck it managed to beat your theoretical power number. 267 times 1.1 to get the extra 10% drivetrain loss back puts the car at 293rwhp.
This drops the estimated gain to 65rwhp from a cam, manifold back exhaust, ls6 intake, and tune. Still sounds a tad high but not out of the realm of possibility IMO.
I agree I too was happy as I was shooting for 325whp. The exhaust is less the 3 feet long with no mufflers, the manifolds are off an 2004 Zo6 which I am told flow similar to shorties. I went as far to get a second dyno result from another shop on one of their dyno days...351/340 on a 93 degree day. The wheels and tires are very light 18lbs wheel 19 lbs tire. I can post the dyno pull printout, both are corrected.
