Introduced in 1959 as a new brand in the Chrysler portfolio, the Valiant was demoted to a Plymouth model from 1960 onward. Whether or not it was a coincidence is of no importance now. Still, the ...
Breathing on the new Valiant engine should be the best of the three designs. For one thing the valve and port sizes were supposedly selected to serve 225 cubic inches on the Plymouth-Dodge version of ...