G8 Diff Question

Drivetrain discussion including Transmission, Differential, Driveshaft, and related items.
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bluethunder
Posts: 119
Joined: Tue Jan 10, 2017 6:43 pm

G8 Diff Question

Post by bluethunder » Fri Apr 28, 2017 11:31 pm

Will a diff from a G8 work in our cars? Do you need a auto car or a stick shift? What ratios do they have? Thanks

cal30_sniper
Posts: 94
Joined: Thu Aug 04, 2016 6:17 pm

Re: G8 Diff Question

Post by cal30_sniper » Fri Apr 28, 2017 11:48 pm

Yes, it will, but the standard G8 diff is the same 2.92:1 ratio as what you already have. If you wanted a better ratio, you'd need a G8 GXP rear, which is going to be pretty rare. It's a 3.27:1 ratio for automatic cars, or 3.70:1 for manual cars.

A newer Camaro diff will also work. They come in 3.27:1 for autos and 3.45:1 for manuals, and some other rarer ratios. Watch out for the 3.27:1 diffs. The V8 cars got LSD differentials, but a lot of the lesser models got open ratio 3.27:1 diffs. There's a tag on the differential that says what its ratio is, and if it's Limited Slip.
-2011 Caprice 9C1, 11k mile non-issue car
-1973 Firebird Formula, restoration in progress
-1986 C20 Suburban 454/5-speed, the toy hauler
-1991 BMW 325i
-2005 Jeep Grand Cherokee 4.7L, the wifemobile

bluethunder
Posts: 119
Joined: Tue Jan 10, 2017 6:43 pm

Re: G8 Diff Question

Post by bluethunder » Sat Apr 29, 2017 4:37 pm

Thank you for sharing that info. Very helpful!

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