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Resolved ARP Head stud set?

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WSPRNI

Probationary Member
23
15
Nov 16, 2025
CRESTVIEW, Florida
Ok, so I have a 99 block, with a 93 head. Ordered the ARP Head stud set (supposedly for 90-99) and look at the pics from what I got to what I had.....am I crazy? What the heck is going on here. First pic is what i had, second is the new....umm help?
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Solution
You bought main studs, for the mains...not head studs.

Head studs can't be 90-99, 90-92.5 are "6 bolt" blocks which are 12mm head studs, 92.5-99 are "7 bolt" blocks which use 11mm head studs. You need the correct ones.
You bought main studs, for the mains...not head studs.

Head studs can't be 90-99, 90-92.5 are "6 bolt" blocks which are 12mm head studs, 92.5-99 are "7 bolt" blocks which use 11mm head studs. You need the correct ones.
 
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