Porting Dart heads??
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Porting Dart heads??
From sifting around the theads i can find, it seems that to get a gain from my Dart 225 as cast heads, the main thing to do is take out some metal from around the valve guide? I am going up to a 4.070 bore so would anyone say any combustion chamber work could be beneficial? Anyone with any actual experience done anything? Cheers.