First i want to say that ive been reading for a while...Im very selective where i join and this place seems like a cool bunch of guys from all walks of life...Well now down to bussiness..

New to me is a BBC...Its basically a stock rebuild as i comming to find...It has flat tops that are .003 down the hole and 781 heads...I got the heads a 3 angle vale job(just a basic one) and the standard bowl blend done on the machine.I plan on running ferrea valves or possibly manleys..K motion springs, and the retainers and locks that came with it...A comp cams solid xe274 770 is the gring and a Q jet on an RPM intake...

My question is about the heads...When i got my parts back the box had a bunch of shims in it...Im not keen on big block heads so im wondering if useing rotator eliminators will prevent me from stacking up spring shims?

Also what kinda power will the engine makewith the unported 781 heads...I want to port them but cant find any info on them...Ive ported a ton of small block heads from my 15* to my lt1 heads and SB2's but never touched a BBC head...Where can i get some guidance on porting them..

For now it will see a small 200 hp shot of giggle gas but i plan on running a turbo and blow through setup...