ARP MAIN STUD KIT - ARP-234-5602


Part #: ARP-234-5602
Price $107.83
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Product Description

SBC Large Journal w/ Splay Cap Bolts; 4-Bolt Main; 12pt Bolt / Hex Nut

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 are manufactured from 8470 chrome moly steel, heat-treated in-house to 190,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 2000% stronger than others.

Fastener Kit Detail
ApplicationSmall Block Chevy Large Journal with splayed cap bolts - 4-Bolt Main
Socket Size(s)1/2" 12pt, 11/16" Hex, 3/16 Allen
MaterialBlack Oxide 8470 Chrome Moly
IncludesComplete set of studs, nuts, and washers for one engine.
STUDS vs. BOLTS

ARP recommends the use of main studs over bolts whenever possible for several key reasons. First is the ability to obtain more accurate torque readings because studs don’t “twist” into the block. All clamping forces are on one axis. By the same token, there is less force exerted on the block threads, which contributes to improved block life (very critical on aluminum blocks). Finally, there are factors of easier engine assembly and proper alignment of caps every time.