Todd, my unfortunate guess is that even with tripled gaskets, you compression is going to be too high for pump gas, AND your quench distance will be way too big, which causes detonation. Even if the pistons are already hanging on the rods, an FE has full floating pins, so disassemblig them from the rods is a two minute deal. If your shop already balanced the rotating assembly, they or you should have a card with all of the weights listed on it. I'm thinking you may have a set of TRW 2292s, which are heavy. If you switched pistons, your machinist would have to take more weight off from the conouterweights of the crank- easy to do- much easier than if you would have to add. Are you thinking you want something like 10 to 1 ? Cal
