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Mod | | | Forums66 Topics128,023 Posts1,055,367 Members48,420 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Mar 2003 Posts: 93 'Bolter | | 'Bolter Joined: Mar 2003 Posts: 93 | ...........does anybody know where a chart of the available S10 4X4 diff ratios is ? It'll save me looking through 40 pages of driveline posts.
thanks.... | | | | | Joined: Dec 2003 Posts: 975 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 975 | GU2 2:73 ratio
GU4 3:08 ratio
GU5 3:23 ratio
GU6 3:42 ratio
GT4 3:73 ratio
GT5 4:10 ratio
GQ1 Open Differential Rear Axle
G80 Positraction/Locking Rear Axle
| | | | | Joined: Mar 2005 Posts: 1,513 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 1,513 | One of those axle codes will be on the sticker on the inside of the glovebox door. Disc brake rears started in 1998.
1952 1300 Canadian 1/2 ton restomod You Tube | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | In addition, what year S10? There are at least 3 different rear axles used in the S10 4x4 depending on year/model, the 7.5" and 7.625" 10 bolts, and a modified version of the 8.5" 10 bolt from the full size truck (ZR2 package). The 7.625 is the most common, and it and the 8.5 were also available with disk brakes after '98 as Curt pointed out. The 8.5 axle is also wider than the others, by about 2".
Bill Burmeister
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