77- Early 85Grand National / T-Type ARP Head Bolt Kit Pro Series 12 Point Head (Buick V6) 3.8 Liter
14 Bolt oil pan engines.
All pro series bolts are cold forged to ensure molecular integrity, heat treated prior to thread rolling and machining, and are rated at 190,000 psi. ARP Pro series head bolts are application specific - designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP "Zero Defect - Zero Failure" quality standard. Hardened and parallel ground washers are included with each kit to ensure even load distribution and accurate torque readings. All pro series bolts have a reduced wrenching 12 point head and wide flange area to eliminate the need for valve train removal for cylinder head re-torquing and permits the use of large diameter valve springs.
