speedo adjustment after gear change
Thread Starter
Supreme Member
Joined: Aug 2003
Posts: 1,644
Likes: 4
From: Long Island New York
Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
speedo adjustment after gear change
I change the gears in my car from 3:27 to 3:73's how do i correct my speedo for this new ratio?? thanks
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 20
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Check these threads in the tech section:
https://www.thirdgen.org/newdesign/t...eedogear.shtml
https://www.thirdgen.org/newdesign/faq/thirdgen.shtml
The last thread has an explanation under tranny section about which speedo gears to buy.
https://www.thirdgen.org/newdesign/t...eedogear.shtml
https://www.thirdgen.org/newdesign/faq/thirdgen.shtml
The last thread has an explanation under tranny section about which speedo gears to buy.
Supreme Member
Joined: Jul 2005
Posts: 1,675
Likes: 3
From: Arab, Alabama
Car: 1988 Trans Am GTA
Engine: 350 4BBL
Transmission: 700R4
Axle/Gears: 3.27
Here is another source for speedo gears and a calculator to figure the right gear to buy. They are $11.00. It is in the middle of this huge page: http://transmissionhead.com/
Where did you get 3.73 gears for a 9-bolt rear end?
Where did you get 3.73 gears for a 9-bolt rear end?
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