6066 (1960-1966) GMC Truck Club

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-   -   63(may be '62) Build (https://6066gmcclub.com/showthread.php?t=51138)

lizziemeister'sV6 May 25th, 2021 09:46 PM

Re: 63(may be '62) Build
 
GMC drums are NOT the same as Chevrolet. Way to many suppliers group these together as one of the same - which there are lots of difference from the turn- signal switch to the radiator support and more.

63gmc4x4 June 3rd, 2021 06:26 PM

Re: 63(may be '62) Build
 
THIS IS TRUE, NOT THE Same i used jeep wagoneer drums drilled out the 6 holes to 1/2 and had to open up the center hole bigger with a hole saw, if your interested i can go into more detail how to do it, i did 2 trucks like this worked great

BobShing June 5th, 2021 10:41 PM

Re: 63(may be '62) Build
 
Yes, I'd be interested in the details. My studs are close to 9/16 (at the base - knurl)
Thanks,
Bob

gmcjuniorvan June 11th, 2021 05:09 AM

Re: 63(may be '62) Build
 
For the rear brake drums I used Centric Part 123.66003 they have fins and fit over the backing plate and still fit the stock rims. Just drill out the stud holes to 9/16. No need to open up the center hole.

BobShing June 13th, 2021 12:21 PM

Re: 63(may be '62) Build
 
Thanks for the information! I'm currently using the drums I bought, and will inspect them after a few miles. If the shoes don't contact completely now I have the solution!
Bob

BobShing June 24th, 2021 02:48 AM

Re: 63(may be '62) Build
 
2 Attachment(s)
With the brakes just about done, I moved on to a simple project, replacing the fuel sender assembly. New part arrived, and here we go again... GMC is different, using a 3/8 line while the new sender was 5/16". Found a suitable fitting to modify (drilled it to the 5/16 line OD) and sweated it on to the pickup tube. The mod didn't take long, just frustrating that it had to be done.

63gmc4x4 June 24th, 2021 05:39 AM

Re: 63(may be '62) Build
 
I found the correct sender with the 3/8 line from tanks inc worked great

63gmc4x4 June 24th, 2021 05:46 AM

Re: 63(may be '62) Build
 
Quote:

Originally Posted by gmcjuniorvan (Post 74215)
For the rear brake drums I used Centric Part 123.66003 they have fins and fit over the backing plate and still fit the stock rims. Just drill out the stud holes to 9/16. No need to open up the center hole.

I would like to see these measurements as compared to the original drums, that centric part number crosses yo an71 k10 I have a 71 and I tried this drum and it still was different

BobShing June 26th, 2021 09:47 PM

Re: 63(may be '62) Build
 
1 Attachment(s)
Today, finally closed the book on Title... Had to use the Vermont process, got her registered and plated in Vermont. Then transferred it to Arkansas where she was issued a title. If you are without title and at a dead end with your DMV, the Vermont (dubbed America's DMV by Jaloplink) process works!

LEWISMATKIN June 29th, 2021 01:20 AM

Re: 63(may be '62) Build
 
jolly's old site has several part numbers for rear brake drums for the spicer 44 rear axles on our gmc's. another alternative is the rear drums for a mid 70's j-10 jeep pick up. i found on another site the same discussion and found a 71-2 k5 blazer 4x4 rear drum 440-1200 napa that looks like it will fit as well. i hope this helps.


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