1/4 mile run
Thread Starter
Instructor
Joined: Jan 2006
Posts: 160
Likes: 1
1/4 mile run
I,ve got a question on 1/4 mile run,would I end in top of 3rd gear or the bottom of 4th gear,my rev limiter is at 6700 rpm,I have 390 gears and the rear wheel horsepower is 576 and 542 lbs of torque.
Safety Car
Joined: Apr 2000
Posts: 4,326
Likes: 140
From: Weatherford, TX
Ok so estimate the potential at 10.4 at 130. If that tire is about 26" tall, you should be at the top of 4th gear near the rev limit. Lots of online calculators for ET and RPM stuff. Using 26" tire and 3.90 gear shows you would likely end up in this range.
6500rpm at 129mph
7000rpm at 139mph
6500rpm at 129mph
7000rpm at 139mph
Race Director
Joined: Apr 2009
Posts: 10,581
Likes: 252
From: SE TEX
Should definitely be in 4th gear. With 507/460 and stock 3.42s I was at the bottom of 4th with a best mph of 122. I think with 3.90s you could be getting close to the top of 4th. Keep us posted 
AMP Racing
Joined: Aug 2006
Posts: 10,755
Likes: 589
From: Washington TWP NJ
2023 C5 of the Year Finalist - Modified
2017 C5 of Year Finalist
St. Jude Donor '09-'10-'11-'12
I'm kinda surprised your rev limiter is set so low. I would expect it to be 7000+.
What is your set-up?
You might also want to think about a 28" tall tire.
What is your set-up?
You might also want to think about a 28" tall tire.
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with that rear gear would have to be.
