5.3 with flat top pistons & 706 heads with valve job

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02-13-2012, 11:53 PM

#21

mcfarlnd

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Quote:

Originally Posted by 1FastBrick

When the valve is too close to the edge of the bore, the airflow can become restriced and in some cases stall. This is typically seen on the flow bench when testing with a borefixture to see how the air will react withen the cylinder.

Ok. Got ya! Thanks. Shrouding shouldn't be an issue if they put the 243/799 heads on the trucks, which had the 2.00 valve. So, putting that 2.00 valve in the stock head shouldn't be an issue. Reason why I was curious, is I have the 2.00 intake valves in my worked 5.3 heads and really made a difference. I guess I can't say that was the only reason it runs better due to milling, valve job porting etc. but the Truck runs great.