I'm almost positive that the 1964 442 only came with the 330 C.I. motors due to GM safety concerns with the Olds., Buick and Chevy brands scope twocents
The 1964 Chevelles hot motor was the 220 HP 283 shruggy
Pontiac GTO with the 389 C.I. and Tri Power was the exception to that rule work


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)