Product Description


This item is for eight (8) .040 over bore Sealed Power cast aluminum pistons for 1970-1983 AMC and Jeep 304ci V-8 engines. P/N (8) 1079NP-040.

For budget or stock-style rebuilds, it's hard to beat the value of Sealed Power cast aluminum pistons. They are made from high quality aluminum alloys and feature a carefully controlled casting, heat-treating, and CNC-machined process. Because they are designed and manufactured to exceed O.E.M. specifications, these pistons provide improved reliability, performance, and a long service life.  


  • Bore: 3.790 in. (at .040 bore)
  • Stroke: 3.440 in. (stock)
  • Connecting Rod Length: 5.875 in. (stock); rods NOT included
  • Piston Top Style: Dish with 4-valve reliefs
  • Compression Height: 1.581 in.
  • Piston Material: Cast aluminum
  • Wrist Pin Diameter: .931 in.; pins included
  • Wrist Pin Style: Press-fit only
  • Ring Land Sizes: 5/64-5/64-3/16 (oil ring); rings not included
  • Notes: Recessed head is .130 in. deep by 3.320 in. diameter

Falcon Performance specializes in shipments to Sweden, Germany, Australia, Norway, Denmark, France, United Kingdom, Iceland, South Africa, New Zealand, Japan, Canada, and many other countries. Please use the shipping calculator for orders outside the continental USA.

Put our 75+ combined years of experience to work for you... Thank you, the Falcon Team!

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