drag racing a stick car - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

thundercat 1 · 07-11-2014, 08:20 PM

were do you guys shift at peak torque or peak hp someone told me to shift were the torque and horsepower meet on the dyno sheet . I don't know .any advice .stick car with supercharger.thanks

Pro Stock John · 07-11-2014, 08:25 PM

Should shift at peak HP or slightly past it depending on your power curve.

You basically want the engine to spend as much time as possible in the best part of it's power curve.

If you make say a peak of 500 RWHP, you'd want to spend time where you make the most power... peak. Shift to early and too low, you could be shifting where the car is only making 450 rwhp, and on your shift, the RPMs will drop even lower.

Hope that helps.

Some folks in pro classes will shift past peak HP because the drop-off is not that bad and they are trying to keep the RPMs up.

BFASTNOTLAST · 07-11-2014, 08:51 PM

Quote:

Originally Posted by thundercat 1

were do you guys shift at peak torque or peak hp someone told me to shift were the torque and horsepower meet on the dyno sheet . I don't know .any advice .stick car with supercharger.thanks

I would say shift it 4 to 500 past peak HP. I peak at 6500 but it does not fall off hardly at all, I shift at 7000-7100. Puts it right in the sweet spot for the next gear. But all set ups are different, play around and see what works best.

thundercat 1 · 07-13-2014, 11:38 AM

thanks I will try it

2010SSRSM6 · 07-15-2014, 03:50 PM

Higher the better but stay off the limiter. lol. I am finally getting the nads to shift higher and I've picked up 7-8 mph on the top.

thundercat 1 · 07-15-2014, 07:20 PM

car went 11.11 at 126.55 with a 1.60 60 ft just trying to go faster

96MrBass · 07-15-2014, 08:42 PM

Holy s**t thats what I'm talking bout take that Hellcat/ZL1/GT 500 lol. Congrats

outlawprostreet · 07-16-2014, 06:40 AM

Quote:

Originally Posted by thundercat 1

car went 11.11 at 126.55 with a 1.60 60 ft just trying to go faster

Nice 60'. I'd like to hear more about your setup if you don't mind sharing. Tires, clutch, suspension and launch (clutch dump or slipping).

thundercat 1 · 07-16-2014, 11:02 PM

m&h drag radial- m&h skinnys -weld rts 17 inch --rxt clutch-zl1 hd driveline-tie rod and toe rods bmr--stock struts and springs-drag aligement on rear -3500rpm slip clutch about 3 or 4 ft-- car made 619 hp and 565 tq tuned by complete street performance -sc -ls9 cam- borla headers -3.4 pulley

Pro Stock John · 07-17-2014, 02:15 PM

If you change shifting points and see an increase in RPM you are shifting where you make more power, good stuff.

thundercat 1 · 07-17-2014, 08:42 PM

never really payed much attention to where I shifted the car now with a dyno sheet I know when to shift .may have been missing a lot of power .we will see next time at the track.

07-11-2014, 08:20 PM	#1
thundercat 1 Drives: 2010 camaro ss/rs Join Date: Jul 2011 Location: pa Posts: 88	drag racing a stick car were do you guys shift at peak torque or peak hp someone told me to shift were the torque and horsepower meet on the dyno sheet . I don't know .any advice .stick car with supercharger.thanks

07-11-2014, 08:25 PM	#2
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,216	Should shift at peak HP or slightly past it depending on your power curve. You basically want the engine to spend as much time as possible in the best part of it's power curve. If you make say a peak of 500 RWHP, you'd want to spend time where you make the most power... peak. Shift to early and too low, you could be shifting where the car is only making 450 rwhp, and on your shift, the RPMs will drop even lower. Hope that helps. Some folks in pro classes will shift past peak HP because the drop-off is not that bad and they are trying to keep the RPMs up. __________________ PROJECT HEAVY CHEVY Camaro Now: Mods for the Masses Part I \| Part II 13.15@106 1.95 \| 100% Stock 12.37@112 1.85 \| + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune 12.06@113 1.70 \| + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune 11.84@115 1.59 \| + 3.91s + Race Star 17x7 Fronts 10.90@125 1.47 \| + GPI VVT Cam + BW Ported Heads + CD 3800 Last edited by Pro Stock John; 07-17-2014 at 02:14 PM.

07-15-2014, 03:50 PM	#5
2010SSRSM6 Drives: My wife crazy with my C5 usage. Join Date: Apr 2009 Location: DFW Posts: 6,558 View My Garage	Higher the better but stay off the limiter. lol. I am finally getting the nads to shift higher and I've picked up 7-8 mph on the top. __________________ UNDER CONSTRUCTION......again......

07-15-2014, 08:42 PM	#7
96MrBass Drives: GM Join Date: Sep 2010 Location: Marydel, DE Posts: 1,321	Holy s**t thats what I'm talking bout take that Hellcat/ZL1/GT 500 lol. Congrats __________________ Roto- Fab Cai, SLP 1 3/4" headers, 3"X pipe, LM2 cat back, Comp Cam & AI Heads, SLP UP, RPM Tuned, GPI Intake, Vmax TB, ADM Air Scoop, 3.91 Gears, Gforce driveshaft, Braille 21#, Elite Catch Can, Pfadt Tie Rods, Diff Bushings and Trailing arms, Eibach spings & sways, BMR cradle bushings, Nt555r's.

07-17-2014, 02:15 PM	#10
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,216	If you change shifting points and see an increase in RPM you are shifting where you make more power, good stuff. __________________ PROJECT HEAVY CHEVY Camaro Now: Mods for the Masses Part I \| Part II 13.15@106 1.95 \| 100% Stock 12.37@112 1.85 \| + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune 12.06@113 1.70 \| + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune 11.84@115 1.59 \| + 3.91s + Race Star 17x7 Fronts 10.90@125 1.47 \| + GPI VVT Cam + BW Ported Heads + CD 3800

07-13-2014, 11:38 AM	#4
thundercat 1 Drives: 2010 camaro ss/rs Join Date: Jul 2011 Location: pa Posts: 88	thanks I will try it

07-15-2014, 07:20 PM	#6
thundercat 1 Drives: 2010 camaro ss/rs Join Date: Jul 2011 Location: pa Posts: 88	car went 11.11 at 126.55 with a 1.60 60 ft just trying to go faster

07-16-2014, 11:02 PM	#9
thundercat 1 Drives: 2010 camaro ss/rs Join Date: Jul 2011 Location: pa Posts: 88	m&h drag radial- m&h skinnys -weld rts 17 inch --rxt clutch-zl1 hd driveline-tie rod and toe rods bmr--stock struts and springs-drag aligement on rear -3500rpm slip clutch about 3 or 4 ft-- car made 619 hp and 565 tq tuned by complete street performance -sc -ls9 cam- borla headers -3.4 pulley

07-17-2014, 08:42 PM	#11
thundercat 1 Drives: 2010 camaro ss/rs Join Date: Jul 2011 Location: pa Posts: 88	never really payed much attention to where I shifted the car now with a dyno sheet I know when to shift .may have been missing a lot of power .we will see next time at the track.