1977- Early 85Grand Nationa / T-Type ARPHeadBolt Kit Pro Series 12Point
Head (BuickV6) 3.8Liter 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 are a to eliminate the need
for valve train removal for cylinder head re-torqueing and permits the use
of large diameter valve springs.
