Engine Kits

ARP Main Stud Kits, Chevy SB Chevy SB 400 cid w/splayed cap bolts 4 bolt main
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ARP Main Stud Kits, Chevy SB Chevy SB 400 cid w/splayed cap bolts 4 bolt main

Part #: 234-5605
List Price: $257.36
Our Price: $171.53
You Save: $85.83

Chevy Small Block 400 cid with splayed cap bolts & windage tray, 4 bolt main, ARP Main Studs 234-5605
ARP Chevy SB Main Stud Kits, There are many important reasons to use ARP Main Stud Kits, for Chevy SB's including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. The ARP Main Stud Kits, For Chevy SB are manufactured in ARP's own factory using the best materials, processes, designs and engineering.

Every ARP main stud kit exceeds the most stringent aerospace specifications. All kits come complete with hardened parallel-ground washers and aerospace quality nuts. Parallel-ground, hardened washers are included with each ARP Chevy SB Main Stud Kit.

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 ARP Chevy SB Main Stud Kits are manufactured from 8740 chrome moly steel, heat-treated in-house to 200,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others.

Don’t settle for anything less than the best.
on genuine ARP studs – you’ll find the ARP name stamped right on the end!

Tech Tips for Main and Head bolts installation by ARP Automotive Products


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.

Brand ARP
Fastener Nut Style Standard hex
Fastener Style Stud
Fastener Yield Strength (psi) 200,000 psi
Main Bolt Style 4-bolt
Nuts Included Yes
Part Type Main Cap Fasteners
Product Line ARP Main Stud Kits
Quantity Sold as a kit.
Washers Included Yes
Works with Windage Tray Yes

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