|
Re: Rear Differential Identification
Sounds like a GM 12-bolt truck axle. To tell if it's a posi, jack it up and spin one tire. If the other one turns backwards, it's an open diff. If it spins the same direction, it's a posi.
__________________
-1967 Chevrolet Fleetside LWB- 350 V8 w/thumpr cam, NV3500, 3.08 gears, A/C, PS 
-1983 Chevy Silverado C1500- 383 stroker, TH400
-1989 Chevy Silverado K1500 SWB- 5.3L swap, 700R4, 3.42 gears
-And a '66 Ford Mustang- 200 I6, C4 trans, rust bucket
"The only thing we have to fear is fear itself." -FDR (and maybe rust too) 
You've gotta be able to stop and steer before you can go fast!
|