Cadillac 331-429 Intake Flange

Includes one pair of intake flanges for the Cadillac 331, 365, 390, 429 hot rod engine (see engine applications below).  These flanges are cut with a CNC fiber laser 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 coated lightly with oil.  The end result is a surface ready to weld to without the extra prep time to remove mill scale. 

Engine Application:

Cadillac

            331 cu. in (1949-55)

            365 cu. in (1956-58)

            390 cu. in (1959-63)

            429 cu. in (1964-67)

            *more applications/years may work, verify before purchasing.

Ports designed to be used with 2″OD Tubing.

These flanges are designed in CAD and are test fit on an actual head to achieve proper fitment.