Fits 396-454 cu.in. Chevrolet big block V8s. Assembling a show quality engine is easy when you choose the Engine & Accessory Fastener Kit from ARP. Everything you need is included in one box so you no longer have to juggle multiple part numbers or wait for parts to arrive from various sources. All of the fasteners included in the kit are rated at 170,000 psi tensile strength which is stronger than Grade 8 and much better than OEM hardware. Each kit contains twelve groups of fasteners such as intake manifold, valve cover, oil pan, headers, front cover, water pump, and more. They are available in 8740 chrome moly steel with a black oxide finish, or brightly polished stainless steel. You can also choose between hex heads and 12-point heads for most sets. The kits come neatly organized and labeled in a vacuum wrapped package. 12-point heads, order ARP 535-9601 for hex heads Stainless steel, order ARP 535-9701 for black oxide finish For use on carbureted engines only. Newer EFI applications may require the purchase of additional fasteners