Building a 340 engine

Yes, still could use the KB hypers available for less with 4.06 bores, and there are three separate dish sizes, too. Basically a hyper version of the Icon pistons, both are manufactured by UEM. The one with an 11.2 cc dish at zero deck ( Cometic MLS Head Gaskets C5917-036 ) would yield a 10.85-10.9:1 compression ratio. The tighter piston to wall tolerance with hypereutectics will have a little less rock in the bores and give a little more tolerance for a .036 piston to head clearance.