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. Ford, Ford Truck 428 CI 7.0L V8 stock replacement piston 1966-1970. Bore 4.132, rings 5/64-3/16, Pin dia .9753.