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then trick flow should talk to summit racing about the specs it says 4.32 minimum bore . what is the bore on your 426 is it 4.25 or bored 70 over ? just asking i would like build a faster motor and i has a std bore 426 world block wedge thanks
i am not trying to be a know it all i thinking about doing the same thing and did some research on it you maybe be able to cut a relief in the cylinder .bore for valve to cylinder wall clearance