The Boss 429 and 429 Super Cobra Jet ... The Boss 429 was Ford's answer to Chrysler's 426 HEMI that dominated the NASCAR series following Ford's attempt to get its 427 SOHC engine approved for ...
Ford responded ... of the original cobra jet engine came from Tasca Ford. They took a police interceptor 428 cubic inch short block and added high-flowing heads from the 427 cubic inch high ...