Wiseco Pro Tru Forged Pistons, Pins, Locks and Rings. Gen 1 SBC 383 CID Stroker (+30 over bore) Make: Chevy Engine: 350 SBC/Bore 4.030 “/Stroke 3.75 “/ Rod Length 5.700 “/Crown Volume -5.0cc Flat (2V)/Compression Height: 1.425″/ Compression Ratio 10.5:1w64cc head / Pin Diameter.927″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.