Fuel Mileage booster’s
Years ago I had a '70 Duster with a rebuilt /6. I milled the head 0.100" and gave it a mild port job. Cam was a Comp 0.452" (@ .005") mech , similar specs to a 360 2-bbl cam. I converted it to Electronic Ignition with an MSD-5. It was converted to 4-speed w/OD from a '75. The kicker was an obscure "gizmo" called the Power Plate; a 1" aluminum spacer that went under the carb. It had 8 degree tapered cones that protruded about 3/4" into the manifold, and the cones had 20 pitch screw threads machined into them. The whole thing was heated by engine coolant. I got a best of 45 MPG, but still could keep it in the mid-30's with an occasional throttle stomp. I got a best of 29.5 MPG without the PP.
Years ago I had a '70 Duster with a rebuilt /6. I milled the head 0.100" and gave it a mild port job. Cam was a Comp 0.452" (@ .005") mech , similar specs to a 360 2-bbl cam. I converted it to Electronic Ignition with an MSD-5. It was converted to 4-speed w/OD from a '75. The kicker was an obscure "gizmo" called the Power Plate; a 1" aluminum spacer that went under the carb. It had 8 degree tapered cones that protruded about 3/4" into the manifold, and the cones had 20 pitch screw threads machined into them. The whole thing was heated by engine coolant. I got a best of 45 MPG, but still could keep it in the mid-30's with an occasional throttle stomp. I got a best of 29.5 MPG without the PP.