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Old 08-21-2024, 02:53 PM   #1
MASONGMC
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Rare GMC 6 Bolt wheel centers

I have 2 6 bolt GMC wheel centers for my 1977 there wasn't any on my truck when it was new and our local dealer ordered the back in 1977 and i never seen
any more. Till i was looking at a Desert Fox picture does anybody else ever seen any ? Zoom in on the picture
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Old 08-22-2024, 09:54 AM   #2
dennislbrooks
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Re: Rare GMC 6 Bolt wheel centers

It looks like the style for K10 rally wheels, but I cannot get a clear picture of it even with zoom. Being 6 lug in 77 would indicate a 4wd of which it would and is common for rally wheels. A close-up clear picture would help us.
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Old 08-23-2024, 05:15 PM   #3
SCOTI
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Re: Rare GMC 6 Bolt wheel centers

Not sure on the 'rare' part so that might be debatable pending definition.

That being said, I would think any standard early Squarebody 6-lug Blazer Rally wheel cap could be made to look the same w/a black vs. silver 'base'. I know I did some that way back in the day (late 80's era using mid-70's caps).
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Old 09-12-2024, 12:17 AM   #4
1774btcrew
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Re: Rare GMC 6 Bolt wheel centers

These were regular 6 lug 4x4 rally wheel caps with a black base instead of silver and a GMC emblem instead of 4x4. I have some NOS ones
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Old 09-13-2024, 01:15 PM   #5
MASONGMC
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Re: Rare GMC 6 Bolt wheel centers

Mine centers had the black bases on with the GMC emblem . What model of GMC truck did they come on from the factory. Is there a Gm part number stamped on your centers
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Old 09-13-2024, 01:21 PM   #6
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Re: Rare GMC 6 Bolt wheel centers

Quote:
Originally Posted by MASONGMC View Post
Mine centers had the black bases on with the GMC emblem . What model of GMC truck did they come on from the factory. Is there a Gm part number stamped on your centers
Not absolutely sure on the model they came on. It is always been my understanding that the earliest rally wheels on square bodies had black bases instead of silver. I also don't think they came out with the 4x4 logo for the rear caps until later. I think earlier ones just had Chevy and GMC
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1972 Cheyenne Super Short Bed big block "Blackie"
1977 Crew Cab GMC Short bed with 4BT Intercooled Cummins Diesel and a 4L80e "The Junkyard Dog"
1985 Crew Cab Chevy dually with 5.9 Cummins "The Big Dog" This is what my dad liked to be called by the grandkids before he passed so it seems fitting for his old truck.
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Old 09-13-2024, 01:33 PM   #7
1774btcrew
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Re: Rare GMC 6 Bolt wheel centers

On a side note, the early six lug rally center caps we're also deeper
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1972 Cheyenne Super Short Bed big block "Blackie"
1977 Crew Cab GMC Short bed with 4BT Intercooled Cummins Diesel and a 4L80e "The Junkyard Dog"
1985 Crew Cab Chevy dually with 5.9 Cummins "The Big Dog" This is what my dad liked to be called by the grandkids before he passed so it seems fitting for his old truck.
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