Where could a vacuum leak be though? I changed the carb, the manifold, and it dies when you choke it. Im not sure how a vacuum leak would cause such low numbers on a compression test either. Unless thats all a sub-8.0:1 with this cam will do. Could this cam bleed off enough cylinder pressure to do that based on the specs of the cam?
1969 Nova 454/M21/3.31 Mild mid-11 second weekend cruiser
1994 F150 XLT Super Cab 2WD 5.0/4R70W/3.55 (Daily driver)