ARP 134-3610 Head Bolt Kit for 2004-Later GM Gen IV LS 4.8L 5.3L 6.0L 6.2L EnginesApplications Chevrolet Small Block Gen III, IV LS Series small block (2004 & later except LS9) w all same length hex bolts These Pro series cylinder head bolts from ARP are cold forged to ensure molecular integrity. They are heat treated prior to thread rolling and machining, and are rated at a whopping 190,000 psi. All kits come complete with hardened parallel washers for even load distribution and accurate torque readings. Specifications:

Duration at 050 inch Lift: 215 int

000" Bore 84-88   All

Intake Duration at 050 inch Lift: 220

Grind Number: 280H

Fits -4AN bottle fittings (standard w/ most ZEX™ kits)

and drag racing engines

rear main seal

This pump is manufactured by Melling and sold under the ENGINETECH brand

King XP / Clevite H race bearings

UPC:672036001797

Retainer Style:Standard

COMP Cams steel retainers are the solution