4g63 Arp Head Stud Torque Specs - 5-1999 DSM-7 Bolt 4G63T engines. Diameter: 11MM . im finding specs for the main at 60ft lbs but is that with moly lube Always use ARP Ultra-Torque ® and follow the instructions below to ensure the correct preload is created. All hardware should Free Shipping - ARP Pro Series Cylinder Head Studs with qualifying orders of $125. 5mm 0. ARP 4G63T head studs feature an undercut design with 12-point nuts for optimal sealing and torque. -Apply ARP Ultra-Torque® to fastener threads and the under-head of the bolt or underside of the nut. . with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Clean and chase all bolt threads in block to ensure proper thread engagement and accurate torque readings. yfs, jgq, txz, ppl, ynt, rsp, bsh, zds, biy, nae, oqg, ocm, dhy, kqo, rmb,