15.1 (lol)
Shouldfair ok as long as your not kicking in the secondary's, maybe >17 mpg, but what fun is that???
Interesting stats to me anyway, my buddies twin BBC boat burns 1 gallon per minute at 55 knots, our 2400# race car will burn a couple gallons on a pass. ( idle to staging, burnout, run, idle to pits). Exactly how much slips my mind right this moment ,but in the log.
Have read a post by John Z how surprisingly low the HP requirement is traveling at 55 mpg in a passenger car.