Dyno a 7.5:1 400? Sure, why not?

whitepunkonnitro said

One of the things I've been wanting to experiment with are shims or pucks that can be attached to the piston head with taper head allen screws...positioned more or less the way gas ports are. The weight would be insignificant considering where in the assembly it is positioned, and it would open up a universe of possibilities as far as compression and more importantly quench is concerned. It sounds off the wall, but I can't see any reason why it would not work.

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Weight would be significant. Better option would be quench 'turtles' in the combustion chambers, they wouldnt move and being a wedge head, the could be away from the valves. Would have to be fastened somehow and butt against the cylinder wall as they sure would want to move over with every power stroke. You could manufacture them with a .040 ring that would overlap the cylinder in the fire ring of the head gasket so it would be a captive fit..too many fitment issues but....?