TX looking for rear diff for 63 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

63frankintruck · 12-26-2015, 09:30 PM

Looking for a rear differential (full rear end to bolt into my 63 C10)
Would prefer a posi set up.
Anything out there?

chevykevy · 12-26-2015, 10:50 PM

I have a 64 cleaned and painted 3.73 Posi I didn't use, put a 72 fug lug under truck after all. Problem is....I'm in Wyoming

frankslagoon · 12-26-2015, 11:45 PM

Ya know that 63 rear end is a odd ball kinda. backing plates are pressed on so it's hard to do a disc convert if ya ever decide to and it's impossible to find good used or new axles cause their 17 spline. My 63 axles had bad wear spots at the bearing surface. They all do. It's a bad design. IMO. 64 thru mid 71 will fit. I used a 66 for mine. everything was the same except the panhead bar. I made the old fit. no big deal

**Captainfab** · 12-27-2015, 12:00 AM

A '63 to early '70 12 bolt will be basically the same. The '63 & '64 12 bolt are the same except fopr the backing plates. The '65-'70 have a different panhard bar but that's nothing a little tweak of the bar can't fix. Also the '65 and up 12 bolt will have the 30 spline axles.

frankslagoon · 12-27-2015, 12:39 AM

Quote:

Originally Posted by Captainfab

A '63 to early '70 12 bolt will be basically the same. The '63 & '64 12 bolt are the same except fopr the backing plates. The '65-'70 have a different panhard bar but that's nothing a little tweak of the bar can't fix. Also the '65 and up 12 bolt will have the 30 spline axles.

Thanks for the correction Capt.

63frankintruck · 12-27-2015, 09:37 PM

Quote:

Originally Posted by Captainfab

A '63 to early '70 12 bolt will be basically the same. The '63 & '64 12 bolt are the same except fopr the backing plates. The '65-'70 have a different panhard bar but that's nothing a little tweak of the bar can't fix. Also the '65 and up 12 bolt will have the 30 spline axles.

Great info. Where do the rears start to get wider?

**Captainfab** · 12-28-2015, 12:06 AM

Late '70........that is why I said '63 to early '70. In '71 the C10's started receiving the 5 x 5" wheel stud pattern but of course the K5's and K10's still had the 6 x 5.5" wheel stud pattern.

Quote:

Originally Posted by 63frankintruck

Great info. Where do the rears start to get wider?

12-26-2015, 09:30 PM	#1
63frankintruck Registered User Join Date: Oct 2015 Location: Keller, tx Posts: 426	looking for rear diff for 63 Looking for a rear differential (full rear end to bolt into my 63 C10) Would prefer a posi set up. Anything out there?

12-26-2015, 10:50 PM	#2
chevykevy Registered User Join Date: Jan 2004 Location: Wyoming Posts: 641	Re: looking for rear diff for 63 I have a 64 cleaned and painted 3.73 Posi I didn't use, put a 72 fug lug under truck after all. Problem is....I'm in Wyoming

12-26-2015, 11:45 PM	#3
frankslagoon Registered User Join Date: Jan 2014 Location: Wasilla Alaska Posts: 537	Re: looking for rear diff for 63 Ya know that 63 rear end is a odd ball kinda. backing plates are pressed on so it's hard to do a disc convert if ya ever decide to and it's impossible to find good used or new axles cause their 17 spline. My 63 axles had bad wear spots at the bearing surface. They all do. It's a bad design. IMO. 64 thru mid 71 will fit. I used a 66 for mine. everything was the same except the panhead bar. I made the old fit. no big deal

12-27-2015, 12:00 AM	#4
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: looking for rear diff for 63 A '63 to early '70 12 bolt will be basically the same. The '63 & '64 12 bolt are the same except fopr the backing plates. The '65-'70 have a different panhard bar but that's nothing a little tweak of the bar can't fix. Also the '65 and up 12 bolt will have the 30 spline axles. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE



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