ARP 3/8-16 in Thread Bolt - 2 in Long - 3/8 in 12 Point Head - Chromoly - Black Oxide - Universal - Set of 5 Boot / Terminal Kit Good high RPM power when

Good high RPM power when used with a centrifugal blower

1959-1961 Chevrolet Parkwood

1968-1974 Chevrolet Bel Air CID 427

Has externally accessible pressure relief valve (max 14 psi)

ARP 3/8-16 in Thread Bolt - 2 in Long - 3/8 in 12 Point Head - Chromoly - Black Oxide - Universal - Set of 5 Boot / Terminal Kit Good high RPM power whenARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Bolt 3 8 16 in Thread 2 in