Are you a 351 Cleveland enthusiast?
If so ...
The 351C has shallow poly-angle combustion chambers. Be proud of that fact. Its one of the things that gives the 351C the superior volumetric efficiency it has. Understand your motor, there are fundamental differences between a poly-angle head and a wedge head ... they are very very different. Don't apply wedge head thinking to a poly-angle head.
The 351C open combustion chamber head is
superior to any wedge combustion chamber design. It makes as much power as the quench chamber version ... its not prone to detonation any more than the quench chamber version. Poly-heads don't depend upon squish for their power and resistance to detonation, those characteristics are achieved by the shallowness and poly-angle shape of the combustion chamber. The two versions of the 351C head were developed at the same time, the quench version was designed mainly to decrease chamber volume, that's all.
The canted valve head that Chevy was developing in 1969 also had an open chamber design. They didn't feel the need for squish, and it was a racing head!
edited to clarify my meaning and curb my enthusiasm
-G
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Pantera Photos |
351C Historic Information |
351C Technical Information
If you use a 351C 4V powered vehicle for a grocery getter ... the eggs aren't going to make it home!
