The CP Pistons Bullet Race Series piston set for Big Block Pontiac applications is a matched set of eight pistons sized to the catalog geometry. It specifies a 4.155 in bore, 4.250 in stroke and a 6.700 in rod length as listed, giving builders the clear bore and stroke numbers needed for displacement and chamber planning; this item is noted MTO non-cancel.
CP Piston BRS Big Block Pontiac 4.155 Bore . 4.250 Stroke 6.700 Rod Set Of 8 (MTO Non-Cancel)