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frdnut · 06-24-2007, 09:27 PM

I have usually heard that term used to describe 351 cleveland heads which basically had two different style heads for the same engine...The 4V heads had smaller combustion chambers for more compression and better "quench"..The 2 barrel heads had much larger combustion chambers for low compression..

06-24-2007, 09:27 PM	#3 (permalink)
frdnut Tech Contributor Join Date: Jan 2002 Location: Ontario,Canada Posts: 4,697	Re: What are "quench heads" I have usually heard that term used to describe 351 cleveland heads which basically had two different style heads for the same engine...The 4V heads had smaller combustion chambers for more compression and better "quench"..The 2 barrel heads had much larger combustion chambers for low compression.. __________________ 1968 mustang 408W Hybrid..Burns gas and rubber!