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I personally would not run a 'pink rod' over 550hp... A PM rod I have no issue taking to 650 or slightly more.
I have personally see PM rods deform at around 700-750 or so hp. I have seen pink rods break at 650.
ok then i guess i dont have to worry to much about my pink rods breaking any time soon then. the pink rods have the square machine mark on the crank side correct ? sorry for the hijack AC. GL getting the animal running for the shootout!