12 bolt rear end? same/same ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Ironhorse** · 02-17-2003, 09:43 PM

Curious as to the truck 12 bolt rear ends and car 12 bolt rear ends. Are they interchaneable, such as a 71 truck 5 lug rear end to say a 71 Chevelle 5 lug rear end? I'm not really sure if I am asking the correct question. Would a posi or open unit from a 3:73 truck fit into the axle housing on a 71 Chevelle? How do I tell what rear ratio is, truck has no engine/trans. but rear axle is complete. Is there an axle code I should be looking for and where? Any help is appreciated.

02-17-2003, 09:43 PM	#1
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,146	12 bolt rear end? same/same ? Curious as to the truck 12 bolt rear ends and car 12 bolt rear ends. Are they interchaneable, such as a 71 truck 5 lug rear end to say a 71 Chevelle 5 lug rear end? I'm not really sure if I am asking the correct question. Would a posi or open unit from a 3:73 truck fit into the axle housing on a 71 Chevelle? How do I tell what rear ratio is, truck has no engine/trans. but rear axle is complete. Is there an axle code I should be looking for and where? Any help is appreciated. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks



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