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    Duffee motorsports has developed a great reputation for the machining and building of vintage engines do to our higher standards and true concern to provide the best.

    We have enjoyed the opertunity to modify and improve several vintage engines to be more efficient, more reliable,  and perform like never before.



   1957 A/C Ace

Corrosion repair and reface with minimal material removal, improved valve angles machined-in.

Bronze valve guides installed and honed to a perfect clearance

Valve guides machined, prior to installation, with a taper for a flow enhancing protrusion into the port and optimized length for valve control.

A finished product ready for shipment.

Example, not actual vehicle.