Head studs, on the other hand, allow us to hold the engine together with more force. Head studs are stronger than head bolts and can withstand up to around 240,000 psi.

Head studs, on the other hand, allow us to hold the engine together with more force. Head studs are stronger than head bolts and can withstand up to around 240,000 psi.

Mild-Mannered 440 Mauler - Part 3, Main Stud Girdle Buttressing the Bottom-End With A CRE Main Girdle HOT ROD StaffWriterAug 01, 2006 See All 20 Photos ...

Proceeding to the deck of the block, Tim installed 11mm, ARP head studs. This engine was from a 2013 F-150 where Ford reduced the size of the head studs from 12mm to 11mm for that model year.

03. The factory main bearing caps would be reused, but rather than installing them with the standard main bolts, ARP main studs were installed.

2. The center main webs revealed where the caps had been moving slightly—despite the deep skirt block and cross-bolted mains, so a set of ARP main studs were added to improve the clamp load.