Quote:
Originally Posted by steve25
With the exh to intake ratio of those 197 heads in stock form, if your going to also run headers a would not run a cam like that with its full extra 10 degrees of exh duration .
I would go no more then 4 or 5 larger.
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The cam Whitmore spec-ed for my ported 197s was a .270-.275 @.050 cam.