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jhoppeolds · 09-25-2007, 08:56 AM

Pontiac and Chevrolet B-body rear axles will not interchange. The Chevrolet uses trailing arms mounted at a completely different angle than the Olds and has the springs mounted on the lower arms instead of the rear end. The Pontiac appears similar, but uses different lower arms in 65-68 (the arm is shaped like a clevis and the bushing is in the rear end instead of the arm) and also has a larger pigtail on the spring end. I also believe the axle is a few inches wider overall. 69-70 big Pontiacs have the Olds style lower trailing arm and spring perch but this axle is definately a few inches wider. I've never checked out the Buick axle interchange so I cannot comment on this.

09-25-2007, 08:56 AM	#4 (permalink)
jhoppeolds Junior Member Join Date: Jul 2007 Posts: 11	65 Delta rear axle interchange Pontiac and Chevrolet B-body rear axles will not interchange. The Chevrolet uses trailing arms mounted at a completely different angle than the Olds and has the springs mounted on the lower arms instead of the rear end. The Pontiac appears similar, but uses different lower arms in 65-68 (the arm is shaped like a clevis and the bushing is in the rear end instead of the arm) and also has a larger pigtail on the spring end. I also believe the axle is a few inches wider overall. 69-70 big Pontiacs have the Olds style lower trailing arm and spring perch but this axle is definately a few inches wider. I've never checked out the Buick axle interchange so I cannot comment on this.