Mopar 440 Engine Supercharger Installation - 875 HP Procharged 440
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Since we were making the move to boosted power and intended to keep compatibility with pump gas with a fairly high boost pressure, the engine's 10.3:1 compression ratio was deemed too high. Rather than the expensive route of changing pistons, we decided to try a set of extra-thick, rubber-coated copper head spacer/gaskets from Flatout gaskets. We have used the Flatout copper gaskets in the past and found them to be of very good quality. They are available in a variety of thickness', with these spacer units measuring 0.125-inch thick. The spacers can be run in conjunction with conventional head gaskets. With this combination, we would reduce the compression ratio by over two points to 8.1:1. View Related Article
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