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- - 4 Crossmember bolt sizes (https://67-72chevytrucks.com/vboard/showthread.php?t=648202)

w00dst0ck

10-31-2014 07:58 PM

4 Crossmember bolt sizes

Need the sizes for the 4 horizontal bolts (2 per side) in the factory crossmember.

Thought they were 7/16-20 but they don't seem to fit.

bj383ss

10-31-2014 09:51 PM

Re: 4 Crossmember bolt sizes

Mine were 7/16"

Captainfab

11-01-2014 01:27 AM

Re: 4 Crossmember bolt sizes

Which crossmember are you referring to? If you're working on the front suspension crossmember, those should be 7/16"-14.

dephep

06-17-2021 07:50 AM

Re: 4 Crossmember bolt sizes

I have been trying to find this info for my crossmember swap for my 62 3/4 ton. Yea I missplaced my hardware bucket over the last year. I'm not sure if they are 7/16-20 x 1 1/4 or 7/16-14 x 1 1/4.

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