These bolts are the recommended part for any Ford Modular 8 bolt crankshaft upgrade or if you want to strengthen your 6 bolt unit these will work also.
These Pro series flywheel bolt kits from ARP give you all you need to bolt in your flywheel with confidence. They're much stronger than OEM hardware, are forged from aerospace alloy, and are heat-treated prior to thread rolling and machining. These bolts feature an exclusive, flat 12-point head design and a larger-than-stock shank diameter, for increased strength and improved flywheel register
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i always use ARP bolts greatest things ever never had 1 fail
I never start a new build without including ARP bolts in all critical stress points on engine.