im not disagreeing with you. the heads make or break a build. the heads only truly need to be 'opened up' when you have a bigger cam that will flow more air. polishing and a nice valve job will do the majority of the gains.
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im not disagreeing with you. the heads make or break a build. the heads only truly need to be 'opened up' when you have a bigger cam that will flow more air. polishing and a nice valve job will do the majority of the gains.
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