528 Hemi all iron 10:1 CR, dual AFB's with progressive linkage, stock intake, stock exhaust manifolds, very small cam (270 advertised), 30deg timing, 727auto, 3.23 gears, electric fans, non power steer, non power brakes, 26" tires @ 32psi, in 70 b-body.

13 mpg with pump-93