yes sir, if you run a power adder your just asking for a big oil mess with a short piston.. the top ring isn't far enough from the top to put any power adder to it.. it least .220 i like .250 to the first ring..but what do i know.. like most the big time engine builders say what is rod ratio ??? reher thinks the rod is just there to connect the crank to the piston... i couldn't agree more.