Main Stud Kit for Buick 401 cid (nail head)

Main Stud Kit for Buick 401 cid (nail head)There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs

They run-in straight and true

which gives themabout 2000% (that’s twenty times) better fatigue strength thanthose studs that are threaded prior to heat-treat (a very commonindustry practice)

and is capable of more than 12

ARP offers two styles of Flywheel/Flexplate bolts: The premium grade Pro Series

Now available for all popular applications

marine and drag racing engines – including those with superchargers and/or nitrous oxide injection systems – ARP offers replacement rod bolts in three different models

Look forARP stamped on each stud as your assurance of quality

That’s whythe fastener experts at ARP have developed special bolts that are far superior to OEM hardware

low-profile design

This helps prevent blown head gaskets

000 psi forthe 8740 material and 220

ARP has developed these ultra strong 190