The CP Pistons Bullet Race piston set for BBC applications lists a 4.615" bore, 4.250" stroke and 6.535" rod length, offered as a matched set of eight. Intended for big-block Chevy builds that need that specific dimensional pairing, this Bullet Race set provides consistent piston sizing across all eight cylinders.
CP Piston BRS BBC 4.615 Bore 4.250 Stroke 6.535 Rod Set Of 8 (MTO Non-Cancel)