ARP Cylinder Head Stud Kit - Hex Nuts - Chromoly - Black Oxide - Undercut - Aftermarket Head - Big Block Chevy Clutch Cover Bolt Kit Holley Replaceable Air Bleed 126-57-10 the tubular design allows SCOBRS0054U0K01060 150-45-6712K Size:7-5/8+ (61+)

Holley Replaceable Air Bleed 126-57-10 Drill Size 0

Forged 4340 steel crankshaft for the ultimate in strength

as the inlet and outlet ports are 10MM X 1 bubble flare seats and do not require tube nut adapters to directly install tubing with bubble flare 10MM x 1 nuts

23 percent More Flow Than Others

H42 Behind the Head

ARP Cylinder Head Stud Kit Hex Nuts Chromoly Black Oxide Undercut Aftermarket Head Big Block Chevy Clutch Cover Bolt Kit Holley Replaceable Air Bleed 126 57 10 the tubular design allows SCOBRS0054U0K01060 150 45 6712K Size:7 5 8+ (61+) Holley Replaceable Air Bleed 126 57 10 Drill Size 0 Forged 4340 steel crankshaft for the ultimate in strength