ARP Main Stud Kit - Hex Nuts - 2-Bolt Mains - Chromoly - Black Oxide - Big Block Buick Blow-Off Valve Frame accepts optional throttle linkage

Frame accepts optional throttle linkage kit (P/N TIL72-790)

1958-1985 Chevrolet Impala

Starting with a CNC cut 3/8" thick flanges into 2-1/4'' primaries stepped to 2-3/8'' with 4-1/2" merge style slip on collectors

14-24 in Adjustable

ARP Main Stud Kit - Hex Nuts - 2-Bolt Mains - Chromoly - Black Oxide - Big Block Buick Blow-Off Valve Frame accepts optional throttle linkageARPs 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: Main Stud Kit Hex Nuts 2