The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-04-2018, 10:26 PM   #1
bigmoe
Registered User
 
Join Date: Oct 2014
Location: brandon, mb
Posts: 34
63 GMC rear end swap options?

I just acquired a 63. Plans are to restomod it with a slight height drop. I've been doing a ton of reading here trying to edumacate muhself, lol. I'd like to do the 73-87 front crossmember swap to convert the front end to power steering and disc brakes. With 5 lug hubs it will give more options for wheels. What are my options for a 5 bolt rear end to fit this truck?
bigmoe is online now   Reply With Quote
Old 11-04-2018, 10:34 PM   #2
Clyde65
1965 Chevy C10, 2005 4.8L/4l60
 
Clyde65's Avatar
 
Join Date: Aug 2004
Location: DFW Texas
Posts: 7,875
Re: 63 GMC rear end swap options?

Just get the 5 lug axles, Mosier has them for 65-69, better spline count. They should fit but ask first!

http://www.moserengineering.com/1965...evy-Truck.dept
__________________
Clyde65

Rebuild of Clyde
http://67-72chevytrucks.com/vboard/s...84#post8338184

69 Aristocrat Lo Liner build
http://67-72chevytrucks.com/vboard/s...84#post7561684



support our troops!
Clyde65 is offline   Reply With Quote
Old 11-05-2018, 12:09 AM   #3
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 21,558
Re: 63 GMC rear end swap options?

With the '63 & '64 truck 12 bolt, converting to 5 lug axles becomes a little more expensive than for the '65-'70 truck 12 bolt. This is because the spider gears must also be changed to accommodate the new conversion axles. The '71-'72 truck 12 bolt will be a direct bolt in except for the panhard bar. The '73-'82 truck 12 bolt and '79-'87 truck 10 bolt can work but require cutting off the leaf spring perches and shock mounts and welding on trailing arm mounts while keeping the correct pinion angle. The '71-'87 truck 10 and 12 bolts are 1.5" wider than your current '63 truck 12 bolt.
__________________
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
Captainfab is offline   Reply With Quote
Old 11-05-2018, 02:16 PM   #4
61K10
Registered User
 
61K10's Avatar
 
Join Date: Feb 2012
Location: pleasant valley--placerville ca
Posts: 2,851
Re: 63 GMC rear end swap options?

63 GMC not a Dana?
__________________
1961 chevy K10

my build is------------61K10 build
61K10 is offline   Reply With Quote
Old 11-05-2018, 02:41 PM   #5
Grounded63
Registered User
 
Join Date: Dec 2016
Location: Denver, Colorado
Posts: 19
Re: 63 GMC rear end swap options?

I swapped a '81 half ton 10 bolt into my '63 chevy. I like the slightly wider stance, of the " newer " rear end. If you swap rear ends, you can also get one with a more highway friendly gear set, if wanted. Killing two birds with one stone. With my swap the drive shaft needed shortening, so be aware of that also.
Grounded63 is offline   Reply With Quote
Old 11-05-2018, 02:44 PM   #6
bigmoe
Registered User
 
Join Date: Oct 2014
Location: brandon, mb
Posts: 34
Re: 63 GMC rear end swap options?

Here's a couple of pics. 12 bolts. It's supposed to have pressed on backing plates for 63 but I see four bolts. Does that mean bolt on backing plates?
Attached Images
  
bigmoe is online now   Reply With Quote
Old 11-05-2018, 02:52 PM   #7
Grounded63
Registered User
 
Join Date: Dec 2016
Location: Denver, Colorado
Posts: 19
Re: 63 GMC rear end swap options?

Yes, looks like it already been swaped to a newer 12 bolt.
Grounded63 is offline   Reply With Quote
Old 11-05-2018, 03:29 PM   #8
bigmoe
Registered User
 
Join Date: Oct 2014
Location: brandon, mb
Posts: 34
Re: 63 GMC rear end swap options?

Hmmm. So if it's the newer 30 spline axles then I could buy Moser axles to convert to 5 bolt. I guess the only way to tell is to pull an axle.
bigmoe is online now   Reply With Quote
Old 11-05-2018, 03:38 PM   #9
Grounded63
Registered User
 
Join Date: Dec 2016
Location: Denver, Colorado
Posts: 19
Re: 63 GMC rear end swap options?

They should be, my understanding is that '64 and up 12 bolts are 30 spline. Except for maybe a few early/mid year '64 exceptions.
Grounded63 is offline   Reply With Quote
Old 11-06-2018, 01:02 AM   #10
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 21,558
Re: 63 GMC rear end swap options?

That is a '65-'70 truck 12 bolt which will have the 30 spline axles and spider gears. So yes you can simply buy a set of 5 lug conversion axles from Moser or any other manufacturer or vendor.

Also a '63 GMC should have leaf springs in the rear. It is possible that it could have been special ordered that way, someone converted it to trailing arms and coil springs, or the frame is not original to the cab.
__________________
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
Captainfab is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:21 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com