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Old 09-24-2017, 02:40 PM   #1
Shamrock72
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Join Date: May 2017
Location: Winnipeg, Manitoba
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1996-2000 Serpentine bracket bolts

Hi everyone

I've searched for the past week all over the net to try to find the bolt sizes and lengths to attached the serpentine brackets to L31 sbc.

A little context, I have a 72 GMC I am swapping an L31 5.7L into. I have all the front accessory brackets, pulleys etc but I do not have the bolts that attach them to the front of the block. I amm astounded I cannot find this info on the internet or even a kit.

I think they are 3/8" but lengths is what I need. Can anyone help me out?
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Old 10-01-2017, 03:53 PM   #2
speedygonzales
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Location: Smithfield, VA
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Re: 1996-2000 Serpentine bracket bolts

Use a bolt to determine the diameter and thread pitch.

Then use something small in diameter and long like a pencil to shove into the brackets to get the length.
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