Quote:
Originally Posted by 7T2
i question the definition of 'canted' vs 'rotated'in this post...
this is a technical discussion which will bore most here, so please indulge me-
definition(s)-
rotated- difference of primary valve angles from intake to exhaust.. for instance- stock pontiac post '67 valve angles are both 14*. 'rotated' term refers to change of that # from 1 valve to the other. as example- if intake primary angle is 14*- like stock late pontiac, and exhaust is 10*, then rotation angle is 4*
canted- refers to the lay over angle which is perpendicular to the primary angle-
the action of valve opening into the bore creates separation from the cyl wall... more lift creates more separation. so canted angle of 5*, like cv-1 creates bore separation @.500" lift that makes 4.35" bore appear as 4.45' bore due to valve lift
when evaluating pics of valve layouts, these definitions will help the viewer to define movements.
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Perhaps the pictures don't show it well enough, But the lay over angle is far different between the intake and exhaust. BUT no where near as much as Jacks or a BBC. They are goofy weird heads but I'm happy with them so far
