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Mod | | | Forums66 Topics128,110 Posts1,056,241 Members48,437 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Sep 2023 Posts: 4 Moderated | | Moderated Joined: Sep 2023 Posts: 4 | hi gang from Canada
got a few big bolts from the 70s and early 80s in the yard here just for yard use as they go cheap and dont want to see them scrapped. 350, 365 and 427 engines. my kids love to play in them and they all run well.
but I located my dream big bolt... sierra, 79, with a factory 4-53T which seem to be more common in the US but the only 1 I have seen forsale in Canada. its getting delivered tomorrow. going to impress my neighbors with that noise! plan to get it on the road, shorten wheel base and put a dually box on her. i have done that once already with a gasser.
anyways the previous owner could not source drums for the life of him. no online catalogue lists the actual drums, just hardware and pads. they are 10 bolt 15x5 from the build sheet. GM H150 axle. i see big truck parts for drums in that size but how do I know they will fit?
wisdom appreciated. | | | | | Joined: Feb 2004 Posts: 29,803 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,803 | The most common difference is the diameter of the lug bolts, and the bolt circle. Make a few more posts so you have access to the private message function on the forum ( I think it requires 4 or 5 posts to get past "moderation") and contact forum member Ed Pruss. I believe he has a method of re-drilling the bolt holes to the proper diameter and spacing to make later model wheels fit- - - -it might be possible to do the same thing with brake drums.
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy rusty krusty, if you could give us the trucks model number and or serial number we may be able to get an o.e.m. part number and see if anyone has a cross to it. Are your wheels Budd (inner and outer nut system), or Motor wheels (single nut per stud)? | | | | | Joined: Sep 2023 Posts: 4 Moderated | | Moderated Joined: Sep 2023 Posts: 4 | sure its a 79 gmc 6000.
i found the parts book online page by page in a jpg. anyone have a pdf? i can only click next so fast 😂 | | | | | Joined: Sep 2023 Posts: 4 Moderated | | Moderated Joined: Sep 2023 Posts: 4 | I found a webb drum catalogue that lists 2 possible fits. same surface dimansions, bolt pattern and spacing. lug size is an easy fix if needed and would have to confirm existing dimensions. fingers crossed! | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Pictures always help when one has enough posts!
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
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