CHEVY 427 MYSTERY MOTOR: PORCUPINE POWER!

A 409-based 427 with trick heads, originally developed for NASCAR super speedways, laid the groundwork for the legendary 427 big-block. In 1963, GM’s support of the absurd AMA racing ban stifled Chevrolet in its quest to dominate NASCAR & USAC stock car and NHRA drag racing. Quietly developed with help from Smokey Yunick, a super-409 displacing 427 cubic inches proved to be just what was needed. Chevrolet got it’s chance to hold off the competition until the ban was history and the “mo...
More