RaceTec AutoTec Forged Dome Piston - 4.310 in Bore - Big Block Chevy (Set of 8) 1000289 RAN62515 8 mm valve stem diameterThe

8 mm valve stem diameterThe COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development

Slick Mist

Inlet Port: 3/8" (NPT)

These features combine to offer a smooth and consistent flow of oil

5 in H x 5

RaceTec AutoTec Forged Dome Piston - 4.310 in Bore - Big Block Chevy (Set of 8) 1000289 RAN62515 8 mm valve stem diameterTheRaceTec AutoTec Forged Dome Piston 4. 310 in Bore Big Block Chevy (Set of 8) Product Description: Piston AutoTec Forged Dome 4. 310 in Bore 1. 5 x 1. 5 x 3. 0 mm Ring Grooves Plus 27. 50 cc Big Block Chevy Set of 8 RaceTec Pistons was founded by Wayne Brooks, and is his second venture into the piston manufacturing industry. In addition to owning a successful aerospace manufacturing company for years, Wayne was an avid racer. He has always modified