I run the RPM on my 77 440 with peanut plug 452 heads,q-jet on an open adaptor on top of that. I used the felpro 1215 with heat blocked off,with the 4 paper gaskets.

woke the ol 440 smog motor right up with a carb/intake swap only in my 88 shortbed. lots of torque with it.

soon to have the whiplash cam in it.