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Pontiac 326-455 Exhaust Flange


Includes one pair of exhaust flanges for the Pontiac V8 326, 350, 455 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:

Pontiac V8

            326 cu. in (1953-54)

            350 cu in (1955-56)

            455 cu in (1957-59)

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


Ports designed to be used with 1-5/8” exhaust tubing.


These flanges are designed in CAD and are test fit to make sure proper fitment is achieved.


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