Talked to the Supplier who builds the pistons for the current 5. 7 Hemmi and the 5. 9 Cummins engines today. They were at the Tech Center doing a Supplier showcase. Anyway, we were looking at the pistons and I mentioned that I had an 03' 555 and we got on the subject of HP. He said they are working on the pistons for a new Cummins engine. He wouldn't give specific Hp and Tq #'s but said it would be over the current 325 Hp and would do so with a larger Cubic Inch.
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