Fuel Efficient Engine Builders?

[Sludgy]

The Chevy small block V8 has more aftermarket engine parts than any other. Take 305, and add tons of parts: Hollow crankshaft, aluminum con rods, roller lifters, titanium valve keepers, high compression pistons, and aluminum heads. Add a few low drag devices like an electric water pump and fan.

BUT, instead of the typical (ridiculous) high lift cam with huge overlap, install a truck cam (high torque at low RPM). Add a 5 speed overdrive tranny and 3.08 gears. Put that inside an old Camaro, which has low frontal area and a decent drag coefficient.

I'll bet it would get 35 mpg highway, and still smoke the tires in first gear.