LS3 S257 dyno results - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

crankpin · 07-19-2019, 12:26 PM

Not a Gen 5 Camaro but it is an LS3. Really inept, but all my dyno runs were with WOT only at 34%. I noticed spool up being slow but was so concerned with other stuff (timing of course) that it got past me, what an idiotic boob.

I suspect it wouldnt matter much since its forced induction.

My setup:
LS3 stock long block
Hi-Ram intake
Summit/Comp 234/246 113 cam (advanced 2 extra degrees)

Autogear Muncie 4 speed and Centerforce single DFX clutch
S257 turbos, AGP .63 turbine housing, ebay 4" intercooler

Dynoject and these are corrected numbers 1.09.

It made 803whp/721wtq...peaked at 6200rpm, 19* timing and 15.5psi, not great results I know. I put this setup together to try to get the flatest torque curve possible to past 7000 for mile racing, not really doing it. The torque curve was much flatter on 4psi to 7000 so I think larger turbine housings would help, I might get the AGP .83 jobbers. I also need to take out the 2* advance I put in the cam when I degreed it in. And 34% throttle opening probably hindered the rpm a little too.

It liked a ton of timing, 19* timing at 15.5psi seems high to me but it is a relatively big cam (14* overlap) and I am running 75% 93 octane gas and 25% M1, so I can get away with it, would never try it on straight 93. 11.1-11.2 afrs.

I'll update here when I fix a few things and go back.

hillshooter · 07-19-2019, 12:33 PM

nice results, with that .63 A/R thats going to be a tire burner, I bet its fun

IKILLEDSUPERMAN_ZL1 · 07-19-2019, 12:44 PM

Very cool. Got pics of the car?

crankpin · 07-19-2019, 02:44 PM

Thanks for the replies, here are a few pics attached. I wish the intake fit under that hood, its about 1.5" too tall so I have to figure something out.

hillshooter · 07-19-2019, 05:00 PM

bad ass !

07-19-2019, 12:26 PM	#1
crankpin Drives: 2010 Camaro Join Date: Nov 2011 Location: Abilene, TX Posts: 54	LS3 S257 dyno results Not a Gen 5 Camaro but it is an LS3. Really inept, but all my dyno runs were with WOT only at 34%. I noticed spool up being slow but was so concerned with other stuff (timing of course) that it got past me, what an idiotic boob. I suspect it wouldnt matter much since its forced induction. My setup: LS3 stock long block Hi-Ram intake Summit/Comp 234/246 113 cam (advanced 2 extra degrees) Autogear Muncie 4 speed and Centerforce single DFX clutch S257 turbos, AGP .63 turbine housing, ebay 4" intercooler Dynoject and these are corrected numbers 1.09. It made 803whp/721wtq...peaked at 6200rpm, 19* timing and 15.5psi, not great results I know. I put this setup together to try to get the flatest torque curve possible to past 7000 for mile racing, not really doing it. The torque curve was much flatter on 4psi to 7000 so I think larger turbine housings would help, I might get the AGP .83 jobbers. I also need to take out the 2* advance I put in the cam when I degreed it in. And 34% throttle opening probably hindered the rpm a little too. It liked a ton of timing, 19* timing at 15.5psi seems high to me but it is a relatively big cam (14* overlap) and I am running 75% 93 octane gas and 25% M1, so I can get away with it, would never try it on straight 93. 11.1-11.2 afrs. I'll update here when I fix a few things and go back.

07-19-2019, 12:33 PM	#2
hillshooter Drives: 2015 Camaro SS commemorative Join Date: May 2015 Location: Utah Posts: 425	nice results, with that .63 A/R thats going to be a tire burner, I bet its fun __________________ 2015 Camaro SS, LS3 Stroker, PRC heads,CUSTOM CAM. AGP 68/68 with custom Hot and Cold side. Fore triple pumps, Holley terminator X. BMR drag suspension with carlyle brake kit. 15" ET drags and 17" skinnies. ZL1 3.73 gears , aluminum driveshaft. TH400 with circle D converter.

07-19-2019, 12:44 PM	#3
IKILLEDSUPERMAN_ZL1 Drives: 2011 Camaro SS Join Date: Jul 2017 Location: Wichita,KS Posts: 603	Very cool. Got pics of the car? __________________ 2011 Camaro 2SS, 6.0 iron block forged bottom end, Dart heads, BTR intake, Huron twin turbo kit, Summit stage 3 twin turbo cam, Circle D stage 4 6L90, 3800 FTI converter. BMR suspension, Viking coil overs, Fore triple pump fuel system.

07-19-2019, 02:44 PM	#4
crankpin Drives: 2010 Camaro Join Date: Nov 2011 Location: Abilene, TX Posts: 54	Thanks for the replies, here are a few pics attached. I wish the intake fit under that hood, its about 1.5" too tall so I have to figure something out. Attached Images

07-19-2019, 05:00 PM	#5
hillshooter Drives: 2015 Camaro SS commemorative Join Date: May 2015 Location: Utah Posts: 425	bad ass ! __________________ 2015 Camaro SS, LS3 Stroker, PRC heads,CUSTOM CAM. AGP 68/68 with custom Hot and Cold side. Fore triple pumps, Holley terminator X. BMR drag suspension with carlyle brake kit. 15" ET drags and 17" skinnies. ZL1 3.73 gears , aluminum driveshaft. TH400 with circle D converter.