Posted August 2, 200420 yr comment_89577 Hello everyone. I dropped my P90 head off at the machine shop today. These are the specs I gave him: 262/272 duration 450 lift mill head .020 for a 9:1 ratio 5 way valve grind intake 3 way valve grind exhaust port and polishWhat do you all think? Let me know. Rick. Link to comment https://www.classiczcars.com/forums/topic/12741-p90-head-modifications/ Share on other sites More sharing options...
August 3, 200420 yr Author comment_89682 anyone like to comment? Link to comment https://www.classiczcars.com/forums/topic/12741-p90-head-modifications/#findComment-89682 Share on other sites More sharing options...
August 3, 200420 yr comment_89736 Give them the intake also so they can match the ports. Link to comment https://www.classiczcars.com/forums/topic/12741-p90-head-modifications/#findComment-89736 Share on other sites More sharing options...
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