Quench and soup bowls

[camaro_fever68]

I know the importance of a good quench area and run some high end street engines such as iron headed 10.9:1 383 with 200psi cranking pressure on pump gas. I like to zero deck my block and run a .039 gasket with flat tops and 64cc chambers. I understand the quench concept to help swirl the air/fuel mixture in the chamber.

My problem now is I have never ran a soup bowl piston. I love flat tops for max power and second best is inverted dome/D-shaped for lower compression.

Now, what about soup bowl turbo/blower type pistons. Will the tight quench area actually help anything when you have a negative 34cc bowl type piston top. Seems to me like it would be the same as running a loose quench. Any thoughts/experiences?


These are to be used in a blower application and it seems to me that they will not benifit from a tight quench. Maybe a thicker gasket to reduce CR would be better in this application???

My pistons are 9.0:1 inverted dome and they reap the rewards of the tight quench being able to run 6+ lbs boost on pump gas. Will soup bowls do this under the same circumstances??