Why did Gm switch from 7.5 to 7.625 Rear End
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Junior Member
Joined: Jun 2005
Posts: 64
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From: Upstate NY
Car: 1982 z28, 2007 Silverado
Engine: 350 Chevy, 10-1 CR, Comp Cams 270h
Transmission: Th350,
Axle/Gears: 3.23
Why did Gm switch from 7.5 to 7.625 Rear End
Hello, I've obtained from the junkyard, a 7.625" 10 bolt rear end w/ limited slip and .308 gears...
This will be replacing my ill .273 open 7.5" rear end...
Why did GM increase from 7.5" to 7.625" ??? Did they find the 7.5's were too cheap and weak, and had to add some strength back in???
I'm not making the kind of power that would break either one, just curious...
Thanks!
This will be replacing my ill .273 open 7.5" rear end...
Why did GM increase from 7.5" to 7.625" ??? Did they find the 7.5's were too cheap and weak, and had to add some strength back in???
I'm not making the kind of power that would break either one, just curious...
Thanks!
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Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
It probably had nothing to do with strength, since they're identical in everything except actual gear size and the gears aren't the weakest part.
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