Help with rear end (differential) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dads 68 GMC · 02-10-2006, 12:52 PM

Can anyone tell me if the complete housing from a 1974 3/4 ton, 4x4 will fit my 1968 or 1971(both 3/4 ton)? Im not sure yet which frame I will use. The 71 has disc brakes and 4.10's and my 68 has 4.56's. This is a complete resto and I would like to be able to drive it more than just around town. Both trucks are 350, 4 speed. The rear end is bad in the 71. It is my farm truck so I will need to fix it regardless. The 74 has 4.10's. If I put the front and rear differential from the 71 into the 68 frame will my drive shafts, etc. be the same? Any help is greatly appreciated. Thanks, Philip

This is all new to me, this is only my second post, I'm amazed at all the knowledge and nice people on this site.

Tynee · 02-10-2006, 04:41 PM

Welcome to the board!! I'm not an expert on what you're asking about, but I bet there's somebody on the board who'll know.

You'll probably get better results if this is in the message board instead of the welcome area, though. I'll put a bug in the mods' ears, they can move it there for ya.

97silv5.7 · 02-10-2006, 05:31 PM

welcome, someone should be able to help you out better in this forum

02-10-2006, 12:52 PM	#1
Dads 68 GMC Registered User Join Date: Feb 2006 Location: Sidney; MT Posts: 172	Help with rear end (differential) Can anyone tell me if the complete housing from a 1974 3/4 ton, 4x4 will fit my 1968 or 1971(both 3/4 ton)? Im not sure yet which frame I will use. The 71 has disc brakes and 4.10's and my 68 has 4.56's. This is a complete resto and I would like to be able to drive it more than just around town. Both trucks are 350, 4 speed. The rear end is bad in the 71. It is my farm truck so I will need to fix it regardless. The 74 has 4.10's. If I put the front and rear differential from the 71 into the 68 frame will my drive shafts, etc. be the same? Any help is greatly appreciated. Thanks, Philip This is all new to me, this is only my second post, I'm amazed at all the knowledge and nice people on this site.

02-10-2006, 04:41 PM	#2
Tynee I miss this truck. Join Date: Dec 2001 Location: Lexington, KY U.S.A. Posts: 2,863	Re: Help with rear end (differential) Welcome to the board!! I'm not an expert on what you're asking about, but I bet there's somebody on the board who'll know. You'll probably get better results if this is in the message board instead of the welcome area, though. I'll put a bug in the mods' ears, they can move it there for ya. __________________ '07 GMC Acadia SLT. Sweet ride. '08 Crew Cab Z-71 short bed. Really like this truck A LOT.

02-10-2006, 05:31 PM	#3
97silv5.7 MooMoo Join Date: Feb 2004 Location: Shapleigh, Maine Posts: 2,424	Re: Help with rear end (differential) welcome, someone should be able to help you out better in this forum __________________ '97 ext 4x4 3" body lift and 7'6" Fisher MM2 '04 Polaris 700 twin EFI sold 2-1-07 '07 Polaris 800 twin EFI Stealth Limited Edition Support the Board! Or deal with me foo! Its all fun and games till you find out shes 16.

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