The CP Pistons Bullet Race (BRS) piston set for Big Block Chevy 564 is supplied as a complete matched set of eight pistons with specific displacement and chamber detail. The listing specifies a 4.530" bore and a 1.220" chamber with +46.9cc, offered as an MTO non-cancel set of eight. Use when a build requires those exact dimensional and volume changes.
CP Piston BRS Big Bock Chevy 564 4.530 Bore 1.220 +46.9CC Set Of 8 (MTO Non-Cancel)