Buick Nailhead 364-425 Intake Flange

One pair of intake flanges for the Buick Nailhead hot rod motor (see motor applications below).  These flanges are cut with a CNC HD (High Definition) Plasma cutter out of 3/8” Pickled and Oiled (P&O) steel.  P&O material is hot rolled steel that has been dipped in acid to remove the mill scale and then a light coated lightly with oil to prevent rusting.  The end result is less work to clean off the mill scale as needed with hot rolled mild steel.

 Motor Application:

Buick Nailhead

            364 cu. in (1957-61)

            401 cu in (1959-66)

            425 cu in (1963-66)

Ports designed to be used with 2” round tubing.