For budget or stock-style rebuilds, it's hard to beat the value of Sealed Power cast pistons. They are made from high-quality aluminum alloys and feature a carefully controlled casting, heat-treating, and CNC-machining process. And, because they're designed and manufactured to exceed OEM specs, they'll provide improved reliability, performance, and a long service life. (1970-1972) Chevrolet, Chevrolet Truck, 402 CI Big Block V8. Crowned Head w/2 valve reliefs. Bore 4.3510, Rings 5/64-3/16, Pin Diameter.
