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  #121  
Old 01-15-2020, 09:11 AM
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Quote:
Originally Posted by Stan Weiss View Post
Those valve sizes and the ones in the JC heads will not fit in a Pontiac head without moving the valves centers. Does anyone know if the SC comes with a different valve center?

Stan
Yes the valve spacing is wider than any other Pontiac head. I believe it's around 2.15.

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  #122  
Old 01-15-2020, 09:57 AM
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PAUL K PAUL K is offline
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The early SC heads had stock valve centers. After a "high end" head porter ("in the know") picked up 30 cfm by moving things around Larry incorporated those changes on the later heads.

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  #123  
Old 01-15-2020, 05:06 PM
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Those heads do have a nice exhaust port and don't need a big exhaust

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