273 Engine intake upgrade turned sour

Ive done the 360 2 barrel cam into 318, ran great.
Look at the specs... 360-2 bbl cam is a dead nuts, identical cam to the comp 252 except the comp claims 0.015 more lift. For 1/3 the price I'll live with the 15 thou less lift.... The ones I have used in such a swap is the melling SPD25. I have one here as we speak, destined for my b body Fury.
The last one I did the 360-2 cam-to-a-318 was an 83 D250. In that one the cam swap was part of a magnum head (EQs) to an LA block swap.
On that one, being as how I had to use magnum rockers, that gave me 1.6 rocker ratio which turned the 0.410 lift if the stock 360-2 cam into a 0.437 lift.
The current one is getting 302 heads instead of EQ magnums, "cuz that's what I have". For how I drive my Fury, it should be as noticeable improvement as it was in my old truck.

My son bought that truck back from my cousin a dozen years after I sold it/, the 318 with it's magnum heads is now in a c body 72 Fury wagon.