hoodscoop

Scoops and sealed air pans can do weird things because of air flow turbulence. I had a friend with a '65 Satellite with a 360 and Hemi scoop on it. It ran well, but not as consistent as it could, and once in a while, it would run way off. All he did was cut some openings (vents) in the seal between the scoop and air pan and the problem went away!

Always re-tune the carb whenever you change anything like that.