ARP 135-3701 Head Bolt Kit for CHEVROLET Big Block 12pt ymm_46 By replacing standard bolts with

By replacing standard bolts with high-strength studs

Low restriction aluminum tubing

remapping the ECU is mandatory to prevent potential “check engine light” warning signals

000˝ Thread Size 1 3/8˝ UHL 2 (Qty: 2) 1

ARP 135-3701 Head Bolt Kit for CHEVROLET Big Block 12pt ymm_46 By replacing standard bolts withIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all out competition powerplants. Simply stated, theres not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to aircraft quality. Each stud is placed vertically in special racks and precisely heat treated to 200, 000 psi. This procedure ensures complete heat