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Old 05-28-2023, 06:44 AM
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steve25 steve25 is offline
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Ok so he does mention it, but gives no details.

The main benefit I see with that type of valve job is to enhance the effect of port bias that is inherent in any non Hemi type head ( non wedge chambers ) with parallel valves .

In a way Vizard has done the same thing with his patented 4 valve Hemi mod where one intake and one exh valve are a little smaller then the other two.

If you have a flow bench and the equipment to do valve jobs then the bottom cut depth/ height around the bowl is what will have the most effect on minimizing the velocity profile differential between the long side of the port and the short side, be it intake or exh.

Like you said, when running boost this matters very little, unless your cam pick is way over the top!

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