|
I don't think the non-Yunick cams were Miller cycle.
They were probably just like any of the "RV" or torque cams, intended to move the torque band down low.
I had one of those in a 283 in my '74 Nova; IIRC I usually got 23-24mpg with it when I behaved myself.
25mpg is a hella long way from 30 though.
|