Cylinder Head Bolt Kit for Buick V6 Stage I (1977-85)

Cylinder Head Bolt Kit for Buick V6 Stage I (1977-85)All Pro Series bolts are cold forged to ensure molecular integrity, heat treated prior to thread rolling and machining, and meet theARP ZERO defect ZERO failure quality standard. ARP Pro Series head bolt kits are application specific and designed to deliversuperior strength typically associated with competition engines. Pro Series kits are available in standard (8740) 190,000 psi tensilestrength material and proprietary (ARP2000) 220,000 psi tensile

12-point head design and larger than stock shank diameter for increased strength andimproved flywheel register

large underhead radius and rolled threads for the utmost in reliability

ARP’s special drive plate bolts have many important features

each stud is centerless ground to makeit as close to perfectly concentric as possible

and is capable of more than 12

reciprocating and valve train components

Increased material strength overcomes valve train harmonics and stress

Available in choice of black oxide finish chrome moly or corrosion resistant stainless steel

substantially stronger than Grade 8 hardware

each stud is placed verticallyinto special racks and precisely heat-treated to 190

the shaft diameter is a larger diameter than the OEM unit

Ford GM 10- & 12-bolt rear ends to the beefy Strange differentials found in Top Fuel and Funny Car applications