426 wedge build

No you dont. My 427 BBC with oval port heads, 11.25-1 compression .585 lift hyd roller with oval port aluminum heads, only made 513 peak tq. And 550 hp. I have a new found Faith in the Mopar big block after this build. I have less compression and cam and head CC and made killer tq from idle to shift point with this build over the Chevy build. The Mopar RPM perfomer head has a 210 CC runner while the oval Chevy is a 290 CC. The victor Jr Mopar head is a 280 CC. Glad i stayed on the small side, got way better results.