Thread: roller rockers
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Old 02-19-2009, 09:13 AM
  #6  
I972Nova
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Join Date: Aug 2007
Location: Orient, OH
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My small block has 1.7 intake and 1.6 exhaust shaft rockers. It bumps my advertised .660 / .630 cam up to .748 / .672. My motor was built by Zimmermans in Indiana. My guess is that the higher rocker ratio makes the pushrod ratio better.
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