Bought a Model A with a GenVI 454 crate motor and mechanical fuel pump, 600 edelbrock, stock heads and pistons (I ran the #'s off the heads and block). It Idled smoothly and I wanted the "thump". So, I put in a CompCams TH 283 Thumper cam, roller lifters (it had a flat tappet cam for some reason) and roller rockers.
I got the thump.
The engine really came to life. Assuming the orig. set-up was around 300hp? What HP and torque would you expect this has?
I realize a Dyno is the only true method, but I live in a rural area and haven't found a dyno yet. I'm just looking for you experienced BBC guys to give me a guess. My guess was around 350hp 420 torque just by the way it runs out.

Any help??????