Took the car to the track for the last time this year.


L98
Hooker 2055 Headers/Y pipe
3" cat back with a powerstick muffler.
AFPR@47PSI
Timing at 8 degrees.
Stock 2.77 9 bolt rear.


Best time was a 14.04@98mph. 2.0 60ft. I couldn't leave any harder than going WOT off idle. I wish I could have ran more, I think I could have got 13's. But someone put their car into the wall, then someone blew their rear. I got 3 runs in for the day.

 

your rear gear is killing you on the strip. swap that out, possibly to the oh so popular 4th gen 3.42 posi rear.

 

running almost identical to my old car. I had 2800 stall and was able to crack 1.89 60 foot on my street tires with those 2.77's. 13.89 at 97 was my best time

you'll get there i think you just need a converter to play with more launch rpm.

i swapped to 3.27's and didnt gain much.. 13.88 on a 1.88 60 foot was my best, but my trap speed went up to 99-100 mph over 97

 

I just wanted to see how much I could squeeze out of the L98. Next year it will have a different heads/cam/intake. After that, the gears and stall for sure.

 

What cahanges did you make mod wise from your last best?You havnt always had the powerstick have you?IIRC werent you always into your flowmaster muffler.

 

I had headers, stock cat back pipes (2.75), and a 80 series. Timing was @10, and AFPR was @49.


Added the 3" cat back, powerstick muffler, adjusted the timing to 8, and adjusted the AFPR to 47. This gave me my new best time.

 

Better times with lower fuel pressure and less timing.Do you think the 3" exhaust or the powerstick or both made the differance?

 

I think both. People were telling me when I was going WOT, I'd puff a little black smoke. I dropped the FP, and it went away. Also when I data logged my car, I got more spark retard advancing it to 10. That's why I took it back to 8. When I put the exhaust on, I "felt" it pulled better. Guess it wasn't in my head. But I honestly believe it was everything.