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It would be helpful if you would tell us what cylinder head you are planning to use with that piston, or post a picture.



CNC'd Stealths



Maybe it is in the post somewhere and I missed it, is this a 500" motor?

If it is, an option is to have the combustion chamber opened to what you need and run a flat top.

When Jeff is done with the CNC work, presuming he still cleans up the combustion chambers/unshroud the valves, they will be at about 88cc. The valve reliefs on most flat top pistons are 4 to 6 depending on the piston. Depending on your cam, you are already pretty close to pump friendly combo with 0.040 quench. Just an option.

Get the CR you want and good quench, that is what is most important. After that, piston shape is splitting hairs.