Wiseco GM LS Series Piston Set 4.070 Bore -3.2cc HAV733003 350" Spring Seat Cutter for

350" Spring Seat Cutter for installing single springs on GM Vortec Heads without hardened spring seats will allow the engine builder to machine the cylinder head to the proper size for your spring

Secondary Main Jet: 73

Stock Car type is 16" x 27" trapezoid with 1" webbing

Provides excellent resistance to fluid oxidation/breakdown at high temperatures

this unit will still pass a gauge test

Wiseco GM LS Series Piston Set 4.070 Bore -3.2cc HAV733003 350" Spring Seat Cutter forChevrolet LSWiseco produces pistons and piston rings for a number of engine applications from classic V8s to sport compacts. Wiseco pistons are available as complete kits or as individual components, including related parts such as wrist pins, connecting rods, and more. Wiseco is unique among aftermarket piston manufacturers in the United States because it is the only brand that produces pistons strictly using the forging process. Starting with