Brand: Automotive Racing Products (ARP)
Replace your main bearing cap bolts with high-strength ARP main studs for improved engine life under the most demanding conditions!
Main studs locate the main bearing caps more securely than bolts alone, which means less tendency for the caps to walk and fret the mating surfaces. Studs also provide more accurate and consistent clamping force because the fastener does not twist when you apply your torque wrench. Studs only get installed once (rather than at every rebuild), which reduces the chances of damage to the female threads in the block.
ARP main studs are made from 8740 chrome moly steel, heat-treated to 200,000 psi tensile strength with J-form threads that are rolled (not cut) after heat treatment (not before) for unmatched strength and precision.
This set fits FE-Series big-block Ford V8 engines (390 through 428 CID)*. Includes 10 main studs, matching hardened washers and 12-point nuts, and a packet of ARP assembly lube.
* Note: This kit requires modification to the #5 main bearing cap in order to clear the oil pan. This modification requires a mill with a radiused counterbore cutter (it is not a job for a hand file). We also offer a special ARP Main Stud Kit for Ford FE-Series Big Blocks with Bolts for #5 Cap (Part No. ARP155-5404) which does not require any modifications.
