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Header Bolt UHL or Which ARP Bolt?

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Old Feb 8, 2022 | 06:42 PM
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Default Header Bolt UHL or Which ARP Bolt?
Hey Guys/Gals- which ARP header bolt works best? There are several options on the ARP website for LS1. Did a Forum search and only came up with a bunch of threads arguing about whether to use the OEM bolts or not. I've already decided to replace with new ones. Also saw a couple of comments about really liking the ARP stud kit option- not sure why. My header flange is 7/16 inch thick. Best UHL bolt to use?

Thanks in advance.
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Old Feb 8, 2022 | 07:38 PM
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From: Warren Oregon
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I used these with my American Racing headers with 3/8" flange.
  • ARP Header Bolt Kit GM LS-Series P/N 434-1102
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Old Feb 9, 2022 | 12:31 PM
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Originally Posted by 03 Owner
I used these with my American Racing headers with 3/8" flange.
  • ARP Header Bolt Kit GM LS-Series P/N 434-1102
Thanks for the confirmation! - that was what I was looking at. That or the 12 point version for a few bucks more.
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