rear end help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1LOW64 · 03-25-2007, 12:27 AM

i want to swap out my rear end in my 64 swb with a 5 lug rear end just wondering if a 1/2 ton rear end out of a 85 p/u would work and about how much one would be any help

**Captainfab** · 03-25-2007, 04:21 PM

That newer rearend is going to be wider than your 64 rear end. So that is going to limit you to how wide of wheels you can run without a deep offset. It can be done, but of course you'll have to cut off all the mounts on the 85 rear end and weld the trailing arm mounts to it.

psychorodder · 03-25-2007, 06:51 PM

I just changed my 65 rearend I used a 71 rearend direct bolt in

BIGPIMP · 03-25-2007, 06:53 PM

yeah 71 or 72 will fit

psychorodder · 03-25-2007, 06:59 PM

I forgot to say the 71 72 rearend is 3/4 inch wider on each side this helped me for I run 20 inch tires.

1LOW64 · 03-25-2007, 06:59 PM

im on my way to baggin it so cuttin mounts is o.k. how much widder is it

stepside66 · 03-25-2007, 10:38 PM

so the axles are longer right but the 3rd member is still the same correct

**Captainfab** · 03-26-2007, 12:01 AM

Quote:

Originally Posted by 1LOW64

im on my way to baggin it so cuttin mounts is o.k. how much widder is it

It's gonna be at least as wide as the 71-72 rear, so 1 1/2" or more, I don't remember exactly and I don't currently have one to measure for ya.

**Captainfab** · 03-26-2007, 12:04 AM

Quote:

Originally Posted by stepside66

so the axles are longer right but the 3rd member is still the same correct

No, the 84 rear end is a 8.5 10 bolt instead of a 12 bolt. The last year for a 12 bolt in a truck was 79 I believe.

stepside66 · 03-26-2007, 11:18 PM

thats what I meant a 62 12 bolt and a 71 are the same so I could get one and put my 4.11 in it since I have a 700r4 in the truck

**Captainfab** · 03-26-2007, 11:43 PM

Quote:

Originally Posted by stepside66

thats what I meant a 62 12 bolt and a 71 are the same so I could get one and put my 4.11 in it since I have a 700r4 in the truck

To the best of my knowledge 63 was the first year for the 12 bolt. As long as the gears you have are for a pickup 12 bolt, yes they will fit in a 71 pickup 12 bolt.

stepside66 · 03-27-2007, 08:38 PM

right on cause I scored a front suspension off an 85 for 20 bucks and some 3 inch drop springs for 50 so the rear will need done before too long

03-25-2007, 12:27 AM	#1
1LOW64 Registered User Join Date: Mar 2007 Location: paso robles, ca Posts: 3	rear end help i want to swap out my rear end in my 64 swb with a 5 lug rear end just wondering if a 1/2 ton rear end out of a 85 p/u would work and about how much one would be any help

03-25-2007, 04:21 PM	#2
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: rear end help That newer rearend is going to be wider than your 64 rear end. So that is going to limit you to how wide of wheels you can run without a deep offset. It can be done, but of course you'll have to cut off all the mounts on the 85 rear end and weld the trailing arm mounts to it.

03-25-2007, 06:51 PM	#3
psychorodder Registered User Join Date: Jan 2007 Location: ga Posts: 37	Re: rear end help I just changed my 65 rearend I used a 71 rearend direct bolt in

03-25-2007, 06:53 PM	#4
BIGPIMP PIMPING RIDES Join Date: Sep 2004 Location: SPRING,TEXAS Posts: 296	Re: rear end help yeah 71 or 72 will fit __________________ 1964 CHEVY 1/2 C/10 FLEET 1981 CHEVY 1/2 C/10 FLEET 1995 DODGE 1500 V6 FLEET EAST http://www.flickr.com/photos/bigasspimp/?saved=1

03-25-2007, 06:59 PM	#5
psychorodder Registered User Join Date: Jan 2007 Location: ga Posts: 37	Re: rear end help I forgot to say the 71 72 rearend is 3/4 inch wider on each side this helped me for I run 20 inch tires.

03-25-2007, 06:59 PM	#6
1LOW64 Registered User Join Date: Mar 2007 Location: paso robles, ca Posts: 3	Re: rear end help im on my way to baggin it so cuttin mounts is o.k. how much widder is it

03-25-2007, 10:38 PM	#7
stepside66 Registered User Join Date: Jun 2005 Location: wichita ks Posts: 97	Re: rear end help so the axles are longer right but the 3rd member is still the same correct __________________ http://i11.photobucket.com/albums/a1.../DSCN20132.jpg

03-26-2007, 11:18 PM	#10
stepside66 Registered User Join Date: Jun 2005 Location: wichita ks Posts: 97	Re: rear end help thats what I meant a 62 12 bolt and a 71 are the same so I could get one and put my 4.11 in it since I have a 700r4 in the truck __________________ http://i11.photobucket.com/albums/a1.../DSCN20132.jpg

03-27-2007, 08:38 PM	#12
stepside66 Registered User Join Date: Jun 2005 Location: wichita ks Posts: 97	Re: rear end help right on cause I scored a front suspension off an 85 for 20 bucks and some 3 inch drop springs for 50 so the rear will need done before too long __________________ http://i11.photobucket.com/albums/a1.../DSCN20132.jpg



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