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Wheel stud thread difference

Cmyron

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Jul 25, 2017
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Hey guys, Ive got a 74 Blazer and my wheel stud threads for my lug nuts differ from front to rear. It is not different on my 74 2wd. Did the 4x4s have different lug threads front and rear. Once again, thanks in advance.
 
A 6 lug 4x4 Blazer should have 7/16" x 20 thread lugs on all 4 wheels..
A 2wd would have 5 lugs with 1/2" x 20 threads on all 4 wheels..

If the rears are different there is a possibility the rear axle was swapped for a later version that used metric lug nuts & studs,or someone got the wrong ones when the originals were replaced,or some other modification was done..
 
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