Features include: Stroker design provides cam clearance for 3.800" on small block Chevy engines and 4.250" on big block Chevy engines; 2 piece forging for increased strength; ARP 7/16" 8740 capscrew bolts standard (190,000psi); Silicon bronze bushings for floating piston pins; multi-stage heat treated; Certified 4340 steel, vacuum degassed to remove impurities; All small block Chevy rods now feature a .050" shorter bolt head for increased block clearance; Forged in China; Sized and machined in the U.S.A.