ARP High Performance Series Main Stud Kit - SB Chevy - 4-Bolt Main w/o Windage Tray 121007 Outflows factory intake by 30%

Outflows factory intake by 30%

1983-1983 GMC S15 Jimmy

RaceQuip SFI 27

600'' exhaust valves this head moves tremendous volumes of air through conservative runner volumes

1975-1996 Ford E-150 Econoline

ARP High Performance Series Main Stud Kit - SB Chevy - 4-Bolt Main w/o Windage Tray 121007 Outflows factory intake by 30%ARP High Performance Series Main Studs eliminate main cap walk and protect the treads in cylinder block. ARPs 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