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Heads, cam, fast 102, kooks thru Corsa. I am happy with my numbers being on a mustang dyno. Now to baby it out the hole and see what I can trap! 434/383
Check the 1/4 times in the stickies, note the DA, decide how much you love your diff, and you'l have a pretty good idea of what's possible. Yeah, I'd be surprised if you don't hit 120. I've been wrong before but realize that 465 at the tire in this platform is flirting pretty hard with 600 at the crank - 580-590.
Check the 1/4 times in the stickies, note the DA, decide how much you love your diff, and you'l have a pretty good idea of what's possible. Yeah, I'd be surprised if you don't hit 120. I've been wrong before but realize that 465 at the tire in this platform is flirting pretty hard with 600 at the crank - 580-590.
What drivetrain loss are you assuming? 15% is pretty much the universally accepted rule (18-20 for auto). 465whp is 547 crank, not 580, and not really close enough to call it flirting.
What drivetrain loss are you assuming? 15% is pretty much the universally accepted rule (18-20 for auto). 465whp is 547 crank, not 580, and not really close enough to call it flirting.
The assumed value is 17% (0.83 coefficient) for the V1. The average dyno for an unmodified LS6 V1 was about 332 RWHP. 332/400 = 0.83.
By the way, that's a really aggressive cam. Great peak power, but poor area under the curve. My old Mustang dyno sheet from 2013 shows me at 195 RWHP at 3000 RPM and 415 RWHP at 5800 RPM. Looks like you're at 175 RWHP at 3000 RPM and finally overtake me with 415 RWHP at 5700 RPM. Next time you get a chance, you might want to consider something with better lower-end power if you plan on participating in Auto-X events (where you want to be steering and not shifting).
Last edited by FuzzyLog1c; 07-05-2017 at 07:18 PM.
If I can trap 120 I'd be happy with that. 430. 460. Don't really matter as long as the car rolls out. I'll shoot for 120. Still need to have the intake ported.
I hit 119.6 mph with 480 rwhp and 465 rwtq (dynojet). Not too be a downer but i'd be suprised if you hit greater then 120 mph. I hope you do but i'd think a little down in power.
What drivetrain loss are you assuming? 15% is pretty much the universally accepted rule (18-20 for auto). 465whp is 547 crank, not 580, and not really close enough to call it flirting.
465/.83=560 It may be halfway across the room but it's still flirting, closer to 600 than 500. I guess we'll see how butthurty this dyno is when he runs it at the track, so long as we know the DA.
A 17% drivetrain loss on the stock setup is better than I would have expected with all that rubber. I would imagine that with poly engine, trans, carrier support, differential, trailing arm and cradle bushings the figure would be a bit lower.
By the way, that's a really aggressive cam. Great peak power, but poor area under the curve. My old Mustang dyno sheet from 2013 shows me at 195 RWHP at 3000 RPM and 415 RWHP at 5800 RPM. Looks like you're at 175 RWHP at 3000 RPM and finally overtake me with 415 RWHP at 5700 RPM.
It's definitely a cam that has excellent top end (as evidenced by the fact that power doesn't appear to have peaked even at redline), but you've got more displacement, so it's not a surprise that you develop torque quicker.
Originally Posted by FuzzyLog1c
Next time you get a chance, you might want to consider something with better lower-end power if you plan on participating in Auto-X events (where you want to be steering and not shifting).
He's got >300ft-lb at the wheels from 2800rpm on up. There's absolutely zero reason to think he would need to downshift to get out of a corner.
Originally Posted by Choppy_Idle
What scared me is that low tq, I did nothing on heads, cam or manifold and have 375, why is it so low, maybe 89 octane or what?
Your torque numbers are unusually high. Can't say I've ever seen another V dyno showing higher TQ than HP. Mine with nothing but Kooks (no tune initially) did 366whp/355ft-lb. After heads/cam/intake/tune it did 423/386.
Not to mention comparing different cars on different dynos on different days is kind of pointless other than to get a general idea.
It's definitely a cam that has excellent top end (as evidenced by the fact that power doesn't appear to have peaked even at redline), but you've got more displacement, so it's not a surprise that you develop torque quicker.
I didn't see where it showed he was running a LS6. If that's a LS6, those are very good numbers.
Originally Posted by AAIIIC
He's got >300ft-lb at the wheels from 2800rpm on up. There's absolutely zero reason to think he would need to downshift to get out of a corner.
You're misunderstanding my point. I wasn't saying he'd have to shift. I was saying that in most cases maximizing area under the curve is better than chasing peak power, particularly in autocross competitions, where you can't or shouldn't shift since you're so busy steering.
07-03-2017, 05:06 PM
Dyno tuned the V today 
Yeah, I'd be surprised if you don't hit 120. I've been wrong before but realize that 465 at the tire in this platform is flirting pretty hard with 600 at the crank - 580-590. 
