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2.5" Wheel stud + 15x10 Prostars = NHRA legal?

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Old 02-23-2007, 01:08 PM
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Default 2.5" Wheel stud + 15x10 Prostars = NHRA legal?

Will a 12mm x 1.5 wheel stud that is 2.5" long protrude past the washer and into the hex at least 12mm on 15 x 10 prostar?

I will not be running a spacer!

Thoughts?
Old 02-23-2007, 02:48 PM
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It should be OK. It will be close. I was never questioned with this.
Old 02-23-2007, 02:52 PM
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Thanks Steve, you run quicker than what I will be running, so hopefully I will be OK as well!
Old 02-23-2007, 03:04 PM
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I am upgrading to a 3" long 1/2" diameter stud.
Old 02-23-2007, 03:10 PM
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It's iffy. I think the rule is the stud has to engage the lug head half the width of the head (from what a tech told me). If I remember right mine just barley pass through the center of the wheel. If you have a tech pull a lug and they see it poking through the center of the wheel they will probrably let you slide.

FWIW: Weld lugs come with a thick *** washer, Mcgaurds come with a thin washer. Weld lugs also rust like crazy.

Last edited by GM Muscle; 02-23-2007 at 03:15 PM.
Old 02-23-2007, 03:36 PM
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Cool.. the 1.65's that are on my moser axle are about 1/8" inside the wheel, I figure almost another inch should do the trick!
Old 02-23-2007, 03:50 PM
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Stock length is 2.5inch. It will be iffy man.. very close.
Old 02-23-2007, 04:00 PM
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Originally Posted by SiL3NtXWS6
Stock length is 2.5inch. It will be iffy man.. very close.
The length of the studs on my Mosers was 1.65", measured via caliper, I don't think I've seen 2.5" long stock studs. Maybe it's different on LS1 cars compared to LT1's?




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