Stage II Cylinder Heads

dereklola

IndyLights
Joined
Jan 25, 2003
What can anyone tell me about cylinder heads for -
- a - turbo motors - as used by most people on the forum
- b - non-turbo (naturally aspirated) as used on NASCAR and Indy Lights engines?

I assume "b" heads have smaller combustion chambers for higher compression - were they just milled or were they different castings? What about valve sizes, port sizes or other differences? And how to recognize them if buying them.
Thx - Derek
 
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