CAM
IN MY OPINION, I WOULD TRY A VACUM CANISTER FOR THE BRAKES,,, YOU GO ANY SMALLER ON THE CAM AND IT WILL KILL THE POWER... MY LAST SMALL BLOCK WAS A 538 558 CAM,, I RAN IT ON THE STREET ALL THE TIME... RAN 11.80 1/4 MILE..PUMP GAS.... BUT MAYBE YOUR LOOKING FOR BETTER MILEAGE THAN YOU HAVE,, COMP CAMS 270H WOULD WORK GOOD... GOOD LUCK