[Formulajones]

In a 455 it is plenty street able and if installed with Rhoades lifters (I'd recommend) it would idle nearly smooth. In fact you wouldn't even need a stall converter. Just to give an idea how the 455 soaks up that cam, the engine would be all done making power by 5300-5500 tops so it's not a big cam at all for a 455.

Honestly if it's running good now with no issues I wouldn't even bother spending all the time and money involved in a cam swap just to put an 068 in place of the 066. Just not worth it to me.