Includes one pair of exhaust flanges for the GMC 305 V6 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.
305 cu. in (1960-69)
351 cu in (1965-68)
*more applications/years may work, verify before purchasing.
Ports designed to be used with 1 5/8” exhaust tubing.