RaceTec AutoTec Forged Dome Piston - 4.5 in Bore - Big Block Chevy (Set of 8) 1000690 184500 6 x 10 in Oval

6 x 10 in Oval 24-Bolt Flange

Durable polymer trays neatly store lifters

Chevy kits include undercut short studs to effectively eliminate head gasket failure

1955-1957 GMC Truck

RaceTec AutoTec Forged Dome Piston - 4.5 in Bore - Big Block Chevy (Set of 8) 1000690 184500 6 x 10 in OvalRaceTec AutoTec Forged Dome Piston 4. 5 in Bore Big Block Chevy (Set of 8) Product Description: Piston AutoTec Forged Dome 4. 500 in Bore 1. 5 x 1. 5 x 3. 0 mm Ring Grooves Plus 32. 70 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