67-72 Disc Swap Questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**RPOZ11** · 08-10-2008, 05:33 PM

Hi all!

Thinking of shortening one of my LWB frames to a SWB and want to do the 5 lug disc swap.
This truck I am using is a 1972 3/4 truck.

I have a complete set of 1/2 ton Disc Brake spindles setups from a 72.

Now.
What do I need to know about this swap?
Should I try to locate the 72 1/2 ton A-Arms?
Can I use the 73 up 1/2 A-Arms on the 72 crossmember?

So, what direction should I go to accomplish this?

Thanx!

I also have an 84 1/2 ton complete truck I am going to dismantle.
(

freeekin Calif smog laws!!!)

Sorry if this is redundant to ask but I did a search on the site and couldnt locate what I need.

ChevLoRay · 08-10-2008, 06:30 PM

The last thing I want to do is take away from anyone on this site who will want to answer your questions. For several issues of Classic Trucks magazine, they did a conversion of a 3/4-ton chassis to do what you would like yours to do.

I am sure their archives are available on-line, and if not, the issues may be.

But, there will be any number of fine folks here who can tell you every possible thing that would affect your plan...what to do, what not to do.

My reason for checking this is I have done the ECE conversion on my '69, and didn't know your plan. Hope this helps.

08-10-2008, 05:33 PM	#1
RPOZ11 72 BB C30 Super LongHorn Join Date: Nov 2002 Location: Chavez Ravine Posts: 1,606	67-72 Disc Swap Questions Hi all! Thinking of shortening one of my LWB frames to a SWB and want to do the 5 lug disc swap. This truck I am using is a 1972 3/4 truck. I have a complete set of 1/2 ton Disc Brake spindles setups from a 72. Now. What do I need to know about this swap? Should I try to locate the 72 1/2 ton A-Arms? Can I use the 73 up 1/2 A-Arms on the 72 crossmember? So, what direction should I go to accomplish this? Thanx! I also have an 84 1/2 ton complete truck I am going to dismantle. ( freeekin Calif smog laws!!!) Sorry if this is redundant to ask but I did a search on the site and couldnt locate what I need. __________________ 72 BB C/30 Longhorn Super HO72 No-Spin, #'s matching, Tilt, Tach, AC, AM/FM HO72 build : http://67-72chevytrucks.com/vboard/s...d.php?t=714492 2017 SS Last edited by RPOZ11; 08-10-2008 at 05:34 PM. Reason: sp

08-10-2008, 06:30 PM	#2
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: 67-72 Disc Swap Questions The last thing I want to do is take away from anyone on this site who will want to answer your questions. For several issues of Classic Trucks magazine, they did a conversion of a 3/4-ton chassis to do what you would like yours to do. I am sure their archives are available on-line, and if not, the issues may be. But, there will be any number of fine folks here who can tell you every possible thing that would affect your plan...what to do, what not to do. My reason for checking this is I have done the ECE conversion on my '69, and didn't know your plan. Hope this helps. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

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