63(may be '62) Build

[lizziemeister'sV6]

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]

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]

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

[gmcjuniorvan]

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]

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]

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]

I found the correct sender with the 3/8 line from tanks inc worked great

[63gmc4x4]

Originally Posted by gmcjuniorvan

To view some links or images in this forum your post count must be 1 or greater. You currently have 0 posts. Maybe you should introduce yourself with a new topic?

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]

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]

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.