I run a small comp roller, 620 / 620 272/276 108
on 3.75 stroke motor installed at 102 ran 10.40's at 3500lbs
on 4.15 stroke motor in at 106 and runs 10.20's at 3500lbs
all runs are thru the mufflers and air cleaners, 2 eddy 1407 750cfm afb's