Includes one pair exhaust flanges for the Oldsmobile 324, 371 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 lightly coated with oil. The end result is less work to clean off the mill scale as needed with hot rolled mild steel.
Motor Application:
Oldsmobile
324 cu. in (1954-56)
371 cu. in (1957-60)
*more applications/years may work, verify before purchasing.
Ports designed to be used with 1 3/4” tubing for the end ports and 2 1/4″ tubing for the center port..
These flanges are designed in CAD and are test fit on an actual head to make sure proper fitment is achieved.
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