Posted November 27, 200321 yr comment_58618 My P90 head has a smaller tb then my N42..also the N42 one has a smaller second butterfly so it has two all up the main one is even bigger then the P90 one...? Link to comment https://www.classiczcars.com/forums/topic/9089-l28-throttle-body-sizes/ Share on other sites More sharing options...
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