Oldsmobile 371-394 Exhaust Flange

One pair of exhaust flanges for the Oldsmobile 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:

  Oldsmobile

371 cu. in

394 cu in (1961-64)

Ports designed to be used with 2” OD tubing.

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