Cadillac 365-429 Exhaust Flange

Includes one pair of exhaust flanges for the Cadillac 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

            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 for center port and 1-3/4″ tube for end ports.

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