XDemonX

Decided to take the C6 to the track tonight. Just had an A&A supercharger kit & clutch installed last week at Leading Edge Performance. I finished the break-in on the clutch two days ago, so I really didnt have much seat time with the new set-up.The car was originally built as an aggressive cam-only set up, but I recently got the urge to up the power.

Mods:
A&A Si Trim, #9
Custom NA Cam
Texas Speed 1 7/8 headers
Hoosier 315/17
91 octane

Non-Z51 (long gears)

Dyno: 653rwhp/559 rwtq

Times:
The conditions were less than ideal (even for LVMS), as the DA was an awful 3600ft when I ran and there was a 15-20mph headwind.

Pass 1: Pass 2:
60f- 1.566 1.556
330- 4.466 4.490
1/8- 6.901 6.929
mph- 101.34 101.68
1000ft- 8.962 8.993
1/4- 10.724 10.748
mph- 128.68 129.06

Yes, this is what a 650rwhp blower car runs in vegas. (For reference my C6Z with 530rwhp runs 10.90s @ 126.5 with a 1.60 60ft, in similar air). I envy those with sub- 1000ft DAs

My shifting was good, but not great as I felt i was a little slower than usual. So, there was a little left on the table, but not much judging by the ET/MPH/60ft. With skinnies and better air in the winter....we shall see.

I want to thank Garth and Stewart at Leading Edge Performance for the hard work and dedication they put into this build. I also appreciate the effort made to get the car back to me in time to race this weekend.

Videos:

LEP

Great job driving! Congrats on the pass! 10.60 in it for sure! Nice 60'..

hnaskoct

Wht rpm are u launching that thing..nice!!!

XDemonX

Coming out at around 5k

staticki

Nice 60 foot man!

My car puts down similar power, but is a z51 car. Here in Chicago I am running a 10.6 at 138mph, but can only cut 1.7 60's.

I am hoping slicks over drag radials will help fix my 60 foot problem.

cmorales515

I wonder what your uncorrected dyno numbers are. Everyone you're racing has to deal with the same air, at least.

A 5K drop on a stock rear end with that much power...wow.

XDemonX

Yeah, dr's can be a little finicky at times. A set of 26 x 11.5 x 17 ET Streets should fix that. I am loving the Hoosier radials though, great bite and stability.

On a side note, I would kill for that mph. Very nice

XDemonX

I do a quick-slip with a progressive increase in throttle. The second pass I actually slipped a little too quick and it bogged after the 60ft. I am pretty happy though considering only two hits on the set-up. I doubt i will even run it again, as it is my daily driver with 70k miles.

Yeah, when the atmosphere you're in is not up to spec... gotta bring your own! Which is why N20 is going on the Z

Joe_G

Nicely done!! It's not so easy to get a high powered manual car off the line and down the track and you were moving. Way to go!

XDemonX

Thanks Joe, definitely appreciated. The long first gear definitely raises some challenges, but its a little more tolerable at least with forced induction.

staticki

I ended up picking a set of 28x10.5x15 slicks.

Should solve my problems.

Joe_G

You're going to need new upper a-arms to run 15's. LG sells them.

They are serious business. You need bias skinnies up front too. Don't try to run bias rear and regular street radial fronts at your MPH it will sway something fierce at the big end.

staticki

I have seen where people just grind down the OEM a-arms to run them. Typically it is just a notch that is required to clear.

Thank you for the heads up. I have heard both sides to having to/not having to run skinnies up front. I have a buddy in a Supra that runs the same tire with radials up front and traps 155+ in the quarter without issues.

Joe_G

Notching worked on c5's but not on c6's from my memory back when I was considering it. I might be wrong on that, so don't trust my word on that.

Do trust my words on the following:

Let's be clear - herding a 1000 rwhp 155 mph Supra down the ¼ mile is a point and pray operation...they wouldn't know if the rear was swaying or not as it sways no matter what you do! I never, ever ever run those guys. I will wait at the light until they are done and have a 10 second reaction time, I don't care as the chances of them coming into my lane are too great.

On a Vette, I promise you, you will get swaying at 90+ mph and it's really scary - I did it for a set of bias ply slicks (they don't last long)....I never had a problem but I realized later that if I'd needed to make an emergency move (once I had to dodge a fox running across the track) and that rear was already swaying, I would FOR SURE end up in the wall.

My strongest advice for you is don't be stupid like I was. Get some skinnies. I got lucky but don't be stupid like I was!

XDemonX

I agree with Joe G., as it can be a handful on a manual car at those speeds. That being said,
If for no other reason, I'd run the skinnies for the extra .1-.2 they will give you. If you've already invested this much anyway, I'd say $400 for that much gain is a great ROI. Since you'd already be buying them, just do the non radial, they're lighter anyway

Joe_G

And I agree with the Demon...I forgot to mention that skinnies and seat out is a consistent .15 to .2 in my slow car. Might be more in that machine of yours.

staticki

Unfortunately it is like a $1,300 investment for a set of front runners

I see Weld RT-S only come in a 17x5 as the smallest. Would it be alright to run a a M&H 28.00 x 4.50-17, Bias-Ply on this wheel? Or should I go with the 26.00 x 4.50-17?

Rear wheels again 28 x 10.50-15.

Joe_G

Since your car is a non z-51, you have standard brakes which have no drilled rotors, this GTO spares at 17" will fit perfectly. I got mine for $75 each and I'm still running the temporary tires with no problem.

staticki

I actually do have a z51 car, but I have z06 brakes on it currently. The rears are getting switched out to c5 base brakes in order to do the conversion.

Joe_G

You can run a 4.5" spacer (lots of guys do it) and run GTO spares even with z06 brakes.

I put on stock c5 brakes for weight savings on my car instead.