Wiseco Professional Strutted Forged Pistons, Pins, Locks and Rings. GM LS 6.0L 364CID+10 over bore=367CID Make: Chevy LS Engine: 364 / Bore 4.010 “/ Stroke 3.622 “/ Rod Length 6.125 “/ Crown Volume -3.2cc Flat Top Asymmetrical valve pockets / Compression Height: 1.304″/ Compression Ratio App 9.9:1w64cc head / Pin Diameter.927”-2.250″with locks / Piston Material Forged 2618 Alloy / Piston Weight 471 grams / Ring Grooves 1.2,1.2, 3.0 mm GFX / Top ductile plasma moly with barrel face/ 2nd cast iron phosphate taper face/ oil flex vent standard tension / Armor Glide 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.