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Message: <blockquote data-quote="OLD H2S" data-source="post: 1439963" data-attributes="member: 20979">How? The rods could be lighter with a set of Chinese I beams than Ford's but unless I go to a high end crank and Carrillo rods there is not much that is lighter than stock. I do like the NPR pistons with the tops and sides coated, they are 12% stronger than stock and they are the OEM supplier so the weight is the same, low cost, quiet running.Now to the CR problems:That -.108 deck is a killer, if I run 13:1 CR I want  close piston to head clearance for detonation resistance. A flat top piston with a .036 head gasket leaves me a deck requirement of .014 but then I am stuck with the stock 52cc heads from the truck and that means I am back to time and money to clean them up.  They would need new guides, seals, seat work, valve lapping, surface decking...I have 2 sets of heads ready, the 38cc TF heads on the aluminum WAP engine and 40cc PI heads that are fully ported with larger valves sitting on the iron block 13:4 CR engine. Both of these heads are going to need at least a -12cc dished piston to get down to 13:1 CR and the negative dish defeats the gains from the close PtoH design.</blockquote>