• Navarro head for flathead Ford V8's '39 through '48. Large valves may be used with heads without flycutting (enlarging chamber contour behind intake valves).

The data below is computed using 4.030-inch bore x 3.68-inch stroke, Chevy 5.7-inch connecting rods, TRW pistons with 1.647-inch compression distance designed for the applications noted in the ...

Ford files patent for lowering tailpipe emissions through pre-chamber ignition Patent design directs captured hydrocarbons back into intake Pre-combustion enables cleaner burn during main ...

Engines are at once surprisingly delicate and amazingly robust. The explosive forces contained within their combustion chambers are shockingly powerful, and it only takes one small crack to send ...