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In the Indian Dragbike post there were a few pictures (someone please post them here!) of overhead cam conversions that people did on some panheads/knuckleheads. been thinking about this and stupid question...whats the gain? (other than a really cool factor) yeah, your eliminating pushrods/lifters/tappets/etc. but is that all? i can't see how that would be much of a performance gain.

i know some newer cars are overhead cam too....just curious other than reliability and accurate/easy valve timing/lift, etc.

someone school me.
 

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Unsprung vavle wieght is the main answer . Also by eliminating your rocker arm ratio you can run a faster lift cam lobe with less chance of bind and a higher lift cam that won't tear up your valve guides . Also you get more revs. out of the motor . Less valve train noise , less moving parts which is a big bonus . Also you can change your port angle to get a straighter shot .
 
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