I have a 251 CI Desoto flat 6. This engine has a 260 duration at .410” lift cam, Chevy pistons and Chevy SS valves, dual Carter B&B carburetors, and a split factory exhaust manifold. This exhaust manifold is a true split as the heat riser baffle plate has been welded internally. As the intake and exhaust manifold are bolted together I have a good supply of exhaust heat to the intake at all times. The engine is running in the attached picture. I ran it about 10 hours on the test stand before installing it in my car with no problems.
Don Coatney
