what gear ratio is this???
Thread Starter
Member
Joined: Jul 2003
Posts: 147
Likes: 0
From: under the hood
Car: 88 gta ....89 formula 350
Engine: 5.7......383
Transmission: heavily reworked 700r4
what gear ratio is this???
the rearend in my 1989 formula 350 was replaced when i bought the car..............it says on one of the tags ( p.n. 10046604) (ratio:2-77 )...and on the other it says (spin resistant diff ) use only approved lubricant........im running ported&polished vortec heads, ported& polished plenum,edelbrock runners, headers,roller rockers/lifters,2300 stahl conv,24# injectors,10-1 compression ratio........is this a good gear for what i have or does anyone recommend something else.......thanks
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
2.77:1.
It's a highway gear ratio. That's a 9-bolt rear, and parts for it are a little harder to come by. This fellow, http://www.koolmeister.com , who hangs out on the Tranny & Drivetrain forum, can help you out.
It's a highway gear ratio. That's a 9-bolt rear, and parts for it are a little harder to come by. This fellow, http://www.koolmeister.com , who hangs out on the Tranny & Drivetrain forum, can help you out.
Thread
Thread Starter
Forum
Replies
Last Post
Hotrodboba400
Firebirds for Sale
3
Dec 10, 2019 07:07 PM
dbrochard
Engine/Drivetrain/Suspension Parts for Sale
6
Sep 19, 2015 08:13 PM
83 Crossfire TA
Suspension and Chassis
0
Sep 8, 2015 12:06 PM
UltRoadWarrior9
Transmissions and Drivetrain
3
Sep 2, 2015 08:24 PM
