Finally at the strip, only 11.57@124, opinions please?
#1
Finally at the strip, only 11.57@124, opinions please?
First of all thanks to all members of this forum who helped me with the info, advises, pics of their projects and inspiration!
After 4 years of building (turbocharging and getting 4L80E in there) my TransAm is in good running state Go 200miles to the strip, race, and go back.
Best result, at 13psi, footbraking the car, was:
11.57@124mph
60': 1.88
1/8: 7.51@96mph
This was just old airfield, no glue. I run 12-bolt 3.73, relocating LCA brackets, Billstein shocks, WS6 springs. MT ET Drags 28x11.5 in the rear. 383ci with my own built turbo kit, with TC78. 3500 Circle-D converter.
Since this was basically my first time at the track with new setup I'm asking for opinions. How does it look? Is chassis "working"? I honestly expected better 60ft - I was racing my other car (Nissan 200SX 1.8L) and it got 60ft' of 1.72-1.75 on smaller tire. My best in TransAm was 1.83.
Unfortunately these were only 2 clips of my runs...
What can you tell from them?
Thanks! I know this was just first track day and I'll work out "bugs" with time, I think car should run at least 10.9x with TC78 turbo?
After 4 years of building (turbocharging and getting 4L80E in there) my TransAm is in good running state Go 200miles to the strip, race, and go back.
Best result, at 13psi, footbraking the car, was:
11.57@124mph
60': 1.88
1/8: 7.51@96mph
This was just old airfield, no glue. I run 12-bolt 3.73, relocating LCA brackets, Billstein shocks, WS6 springs. MT ET Drags 28x11.5 in the rear. 383ci with my own built turbo kit, with TC78. 3500 Circle-D converter.
Since this was basically my first time at the track with new setup I'm asking for opinions. How does it look? Is chassis "working"? I honestly expected better 60ft - I was racing my other car (Nissan 200SX 1.8L) and it got 60ft' of 1.72-1.75 on smaller tire. My best in TransAm was 1.83.
What can you tell from them?
Thanks! I know this was just first track day and I'll work out "bugs" with time, I think car should run at least 10.9x with TC78 turbo?
#6
TECH Fanatic
I agree, you over rev, and your gear is most likely to short. You need a 3.55, hell maybe even a 3.08 thats what I run, but leaving at idle 2.20 60ft, my car mph 127. So my vote is suspention, and gear. Nice car!! Oh I run a cheap ebay turbo GT45.
#7
Yepp the car was banging off the limiter in 1st and probably 2nd too. Gearchange set at 5500, rev limiter at 6200.
Still, do you think 3.73 gear is soooooo way too much? Hell I'm not leaving at 20 psi ) I would like to think gear is at least OK, but my 60ft suffer because of smth. else - either suspension or overall slowness when I start off the footbrake.
It looks to me like front end is not rising up much, and on the other hand rear raises a lot when I bring the revs up, is it how it should be?
Still, do you think 3.73 gear is soooooo way too much? Hell I'm not leaving at 20 psi ) I would like to think gear is at least OK, but my 60ft suffer because of smth. else - either suspension or overall slowness when I start off the footbrake.
It looks to me like front end is not rising up much, and on the other hand rear raises a lot when I bring the revs up, is it how it should be?
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#11
But back to topic What's wrong, what to try and what to test?
#12
I also agree with suspension work and 3.08 or other tall gears. That 4L80E has a low first gear.
Al
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In watching the video I don't see much weight transfer at all to the rear tires. The rear end doesn't hunker down hardly at all and I don't see much lift from the front.
What shocks are you running? What are the settings on them? Are you still running a front sway bar?
What shocks are you running? What are the settings on them? Are you still running a front sway bar?