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Old 06-23-2004, 02:33 PM
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Bolt Pattern - 80's G-BODY

What is the bolt pattern size and all that good stuff for g-body vehicles? is it 4.75"x 5 or 5"x5 or whatever else? I'm trying to figure out what rims will fit my car and what lug nuts will fit as well being that this was the year they decided to make those stupid lug nuts with the chrome caps that always break off of them?

Thanks for any help.

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Old 06-23-2004, 04:51 PM
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The 78-88 GM Gbody cars are all 5" X 4.75" bolt pattern.
The 78-81 lug nuts and studs are an SAE equivelant thread pattern.
The 82-88 lug nuts and studs are a metric equivelant thread pattern.
The wheels that will fit your car can come from MANY other cars,
including the rest of the G-body lines, F-body, Corvette (check backspacing first), S-10 truck, and probably more as it was a VERY common bolt pattern still used today.
As cheap as replacement lug nuts are, I wouldn't really worry about those cheap chrome nuts that like to fall apart, as I believe they still make those things for some cars.
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Old 06-23-2004, 09:06 PM
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I know they fit from many other cars... just.. when you look at a new wheel on eBay it only sepcifies the 4 3/4 part.....

Ehmm.. I looked at-- and if u look up chrome lug nuts on ebay.... 1000's of listings.... but all specify if u need acorn shape if u need this or that.. 14mm width and all kinds of crazy things.. i dont get it? I need 18mm ? or is it 17? i forget who cares i Use the damn 3/4 socket on a breaker bar lol... -- i need that size and metric threads.... and when they mention width and all.. its puzzling.. what the hell do i know ha ha
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Old 06-25-2004, 07:11 AM
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if your using a 3/4 socket in metric its a 19mm.
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