RaceTec AutoTec Dome Forged Piston - 4.030 in Bore - Small Block Ford (Set of 8) 1001340 M-6397-B46 5/16-24 in and 8 mm

5/16-24 in and 8 mm x 1

#4 AN fittings on both ends

Boss 351 Block w/9

preventing detonation

RaceTec AutoTec Dome Forged Piston - 4.030 in Bore - Small Block Ford (Set of 8) 1001340 M-6397-B46 5/16-24 in and 8 mmRaceTec AutoTec Dome Forged Piston 4. 030 in Bore Small Block Ford (Set of 8) Product Description: Piston AutoTec Dome Forged 4. 030 in Bore 1. 5 x 1. 5 x 3. 0 mm Ring Grooves Plus 3. 00 cc Small Block Ford 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