Includes one pair of exhaust flanges for the Big Block Chevrolet 396, 400, 427, 454 Round Port 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. The end result is less work to clean off the mill scale as needed with hot rolled mild steel.
Motor Application:
Big Block Chevrolet
396 cu. in (1965-96)
400 cu in (1965-96)
427 cu in (1965-96)
454 cu in (1965-96)
*more applications/years may work, verify before purchasing.
Ports designed to be used with 2 1/4” round exhaust tubing.
These flanges are designed in CAD and are test fit to make sure proper fitment is achieved.
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