Reply to "335 series engines used in Pantera (429/460/514)?"

Actually DeTom, there are pop up pistons for the 351C with open chamber heads. They are not a pure "dome" shape because of the need for valve clearance.

However, lets dispell a myth. Hemi combustion chambers are not a universally superior design. They make more torque on some engines and less on others. I've also been told that alcohol burning motors work better with hemi heads in some instances. One factor that determines whether or not a particular combustion chamber shape makes more or less power is the geometry of the intake & exhaust ports. On the Cleveland, open chamber heads make less torque than closed chamber heads, that's why ALL racing heads for the 351C have closed chambers. If open chambers were superior, the racing heads would have been designed differently.

That's not to say that will be the case with every motor.

your friend on the DTBB, George