9-bolt Gears vs Jegs.
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Junior Member
Joined: May 2000
Posts: 35
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From: Westfield, IN
Car: '89 Trans Am GTA
Engine: 350 5.7L.
Transmission: 700R-4
Axle/Gears: 9-bolt with 3.73
9-bolt Gears vs Jegs.
I was told that the 9-bolt rear end was a 7.625in. I may be wrong let me know if I am. I was looking in jegs and I saw a 10-bolt that said it was a 7.5 and a 7.625. Now is a 10-bolt 7.625 and a 9-bolt 7.625 the same thing? Would the gears work from a 10-bolt 7.625 fit in a 9-bolt 7.625?
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
A 9-bolt ring gear is 7.75". No, a 10-bolt and 9-bolt gears are not the same and will not fit with each other.
Senior Member
Joined: Jul 1999
Posts: 931
Likes: 0
From: Mpls, MN USA
Car: 88 Camaro
Engine: 427 BBC
Transmission: T400
Just like Kevin said above. The 9 bolt is a 7.75 ring gear. None of the internal parts of a 9 bolt are interchangable with a 10 bolt.
Miles
www.9bolt.com
Miles
www.9bolt.com
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