Wiseco Pro Tru Forged Pistons, Pins, Locks and Rings. Gen 4 Big Block Chevy 454+60 over bore=467CID Make: Chevy Engine: 454 BBC/Bore 4.310 “/Stroke 4.000 “/ Rod Length 6 .135 “/Crown Volume +21cc Hollow Dome Closed Chamber head/Compression Height: 1.645″/ Compression Ratio 10.0:1 with 112cc head / Pin Diameter.990″with locks/Piston Material Forged 4032 Alloy/Ring Grooves 1/16″, 1/16”, 3/16″/ Rings package file fit /Top ductile plasma moly with barrel face/ 2nd cast iron phosphate taper face/oil flex vent standard tension/ Coated Skirt / Sold as kit for 8 Cylinder. Applications 600+hp N/A street, strip, mild nitrous and forced induction. Special order item 3-5 business days. Please e-mail with questions and availability.