Deck Height: 10.300" Bore/Stroke: 4.390" x 3.850" (466),4.390" x 4.150" (502), 4.390" x 4.300" (521), 4.390"x 4.500" (445) Main Caps: 2 bolt production Crankshaft: Cast Eagle/Scat internally balanced Connecting Rods: 4340 Scat Pistons: Probe/Ross/Manley/Weisco Piston Rings: Total Seal Main Bearings: King Pro Series Internal Hardware: ARP /SPS