V8 to V4 Conversion: Get 40 Percent Better Gas Mileage

A V8 to V4 engine conversion will give you much better gas mileage for a small reduction in performance.

058 v8 to v4 conversion better gas milage 04 make hydro holders.jpg
Fabricate "hydro-holders" for each of four sets of two lifters. First, notch a 4"-long piece of 1/8" x 1" x 1" angle aluminum to fit the grooves in the lifters. Then drill and tap the block, and bolt the "lifter locks" in position.