Finding Centerline 72 GTO GM A body to square up rear end

[FED 387]

supposedly in all GM A-Body cars the engine is installed on the centerline NO offset from the factory --HOWEVER the pinion center was offset 1/2 inch to the passenger side of the vehicle--- not sure but what has been said-- might want to google it see what you can come up with

[CraigG]

Thank you guys - very Helpful!

[Mark Yacavone]

Originally Posted by FED 387

supposedly in all GM A-Body cars the engine is installed on the centerline NO offset from the factory --HOWEVER the pinion center was offset 1/2 inch to the passenger side of the vehicle--- not sure but what has been said-- might want to google it see what you can come up with

I thought is was 1 inch but one of the reasons is it centers up the mechanics of the diff
and makes both axles the same length.

[Gary Evans]

Originally Posted by Mark Yacavone

I thought is was 1 inch but one of the reasons is it centers up the mechanics of the diff
and makes both axles the same length.

It also makes a difference if it?s a bbc or sbc. BBC is offset to the drivers side for access to the heater core. Bb cars also have a different heater core with 90*fittings

[L.Fite]

Big Block Camaros are offset to passenger side...