Looking to figure out which 318 heads to use to tune for mileage in an A body on a daily driver. Hydraulic cam also for that matter. Thanks in advance, Dave
I highly doubt there's any noticeable mpg difference between any small block heads.Other than a basic tune it's hard to recoup money spent to increase mileage especially in a summer toy, cheaper usually to put it into the tank. How many thousands you willing to spend to at best save a few hundred a year??
