Ford Y-Block 239-312 Straight Lake Header Kit


Includes one Straight Lake Header Kit for the Ford Y-Block 239, 256, 272, 292, 312 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.


Kit includes: 

1 pair – 30″ long steel megaphones (1-5/8″ inlet & 3-1/2″ outlet) – 4″ outlet available (Include in order notes)

1 – 1-1/2″ OD, 0.065″ wall plain steel (not aluminized!) 180 degree mandrel bend

6 – 1-1/2″, 0.065 wall, 10″ long plain steel tubing

1 pair – 3/8″ thick exhaust flanges – specific motor application listed below

(photo is shown just for reference, contents listed above is actually what you will receive)


Motor Application:


            239, 272, 292, 312 cu. in (1954-62)

Ford Truck

            239, 256, 272, 292 cu. in (1954-64)


            292 cu. in (1959-60)


            256, 292, 312 cu. in (1954-62)

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


Ports designed to be used with 1 1/2” exhaust tubing.


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

1 review for Ford Y-Block 239-312 Straight Lake Header Kit

  1. Marty Schreiber (verified owner)

    Great product

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