The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Rear Diff Carrier

roboticjunky · 08-24-2020, 12:33 AM

You'll need to go with the Series 4 because the TrueTrac only comes in Series 4 for a 12 bolt rearend for trucks. I just bought those same parts for my 72 chevy.

08-24-2020, 12:33 AM	#2
roboticjunky Registered User Join Date: Oct 2015 Location: IN Posts: 209	Re: Rear Diff Carrier - Series 3 or Series 4 You'll need to go with the Series 4 because the TrueTrac only comes in Series 4 for a 12 bolt rearend for trucks. I just bought those same parts for my 72 chevy.