Wiseco BBC Q16 Dome Piston Set 4.600 Bore +42cc 39000509 Stainless steel rear bumper with

Stainless steel rear bumper with post

300% increased durability over bronze distributor gears when used with steel camshafts

IAC hardware specs: (2) 8-32 UNC

Installs above the coil spring

Wiseco BBC Q16 Dome Piston Set 4.600 Bore +42cc 39000509 Stainless steel rear bumper withChevrolet Big BlockWiseco 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