SBF 351 Dart SHP Main Stud Kit

The ARP 154-5613 SBF 351 Dart SHP Main Stud Kit is engineered for serious Small Block Ford builders and street/strip enthusiasts who demand bulletproof bottom-end reliability. Traditional main bolts flex under extreme cylinder pressure and crank loading; main studs eliminate that deflection by locking the block and caps together with far greater clamping force. This kit addresses the critical weak point in any high-horsepower SBF platform—crank walk and bearing failure—making it essential for forced induction, nitrous, or naturally aspirated builds pushing beyond stock parameters.

Constructed from premium chromoly steel and finished in black oxide for corrosion resistance, the SBF 351 Dart SHP Main Stud Kit features ARP's signature hex-nut design with precision-wound threads that distribute load more evenly across the block's bearing saddles. Chromoly's superior tensile strength allows tighter preload specs compared to standard bolts, significantly reducing flex and micro-movement that degrades bearing clearances. The four-bolt main configuration on the Dart SHP block accepts this kit directly, with studs replacing factory bolts to create a permanent, zero-flex clamping system that maintains cylinder wall alignment and protects your crank investment.

This stud kit is ideal for any Small Block Ford 351 cubic-inch engine built on a Dart SHP (Super High Performance) block, particularly those destined for competition or high-boost applications where durability trumps cost. Installation requires standard mechanical skills and torque specifications (refer to ARP's technical data for your specific build), and the kit's compact weight of 3.95 lbs makes handling straightforward during assembly. Whether you're building a street machine, drag racer, or road course competitor, upgrading from bolts to studs is one of the highest-ROI reliability modifications available for any serious SBF platform.