9 bolt what gear you like better
9 bolt what gear you like better
im looking at gears on 9bolt.com. the 4.11, 3.90, 3.70. i got a 700R4 and i drive my car on the highway to the drag strip and i like to be able to still just not at 4 grand. i really like to get my 60 feet time under 1.900's. not an ever day diver. i have a 3.27 and it's ok but time to try something new. what do you guys like better for the gears. thanks
http://www.9bolt.com/gearsets.html
http://www.9bolt.com/gearsets.html
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Joined: Jul 1999
Posts: 17,265
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: 9 bolt what gear you like better
With the 700R4, I wouldn't recommend anything deeper than 3.70 unless you're going to use a taller tire.
I got my car into the 11's with a 3.27 gear and 26" tall tires.
I got my car into the 11's with a 3.27 gear and 26" tall tires.
Re: 9 bolt what gear you like better
OK, thanks for info 3.70 sound fine to me. i know it throw off my speedo so where can i find the piece that going in the trany, to fix that.
Last edited by mk92; Sep 14, 2008 at 10:51 PM.
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: 9 bolt what gear you like better
3.70 gears and an automatic trans you will need a 15 tooth drive gear and VSS and a 45 tooth driven gear. You can get those from a GM Dealer or any 700R4 tranny shop.
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