Quote:
Originally Posted by Nicul15
according to GMs SAE article on combustion for gen v small block it is the puff of hot exhaust gases back into the intake port from the combustion chamber after the intake valve opens is what causes the majority of build up. Those hot particles hit the relatively cool material and cling to it. Over time this builds up deposits. GM focused on valve timing events and made certain tradeoffs to minimize this action.
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Hmmm. If that is true then if you go with a cam with positive overlap than you are looking at major carbon build up.