Ford 427 Cammer:

Effectively banned by NASCAR

Corvair OHC:

Died with the birth of the Camaro

Advertisement

Olds OW-43:

Died when power took a back seat to everything else

Advertisement

DOHC Hemi:

Died with Ford’s cammer

Advertisement

Jeep Tornado:

Survived in Renaults until ‘82, died in domestic markets in ‘64

Advertisement

Pontiac’s Sprint 6: