WTF ? 350HO crate,performer intake manifold,long tube headers,700r4 3.5 gears in a ford 9 inch,rebulit Quadrajet.
Around town driving like a granny and never out of the primarys I get 16-17mpg and its never getting into OD.
As soon as I drive it hard and into the secondarys it drops to 6-7mpg...