Generally speaking do 1.6 ratio rockers usually fit under stock 440 valve covers or is it flat out "no never"? Thank you.
It'll depend on the profile of the rocker, and what year stock valve covers your using, I got Crane 1.6 arms on my 440, using 70 440 stock valve covers, I had to lose the baffles in the cover to clear the arms/adjusters, some applications you can get by using cover spacers, or dimpling the baffles for clearance, or if you have the room, relocate/reweld the baffles closer to the top of the cover....
