Box Stock

363/730 'Flow' Comparison...

S

screamn 2

New member
Has anybody done a flow bench comparison between a 'stock' Hemi head and a 'stock' big valve/sm stem '730' head? Also, is there any body/vender offering SS small-stem valves for the 730? Has anyone put the small valve stem thru 'the-test' Yet? (Curiosity is killing-the-cat here):D
 
I got 51.80 on the stock clone head isn't that close? Unless you are reading the wrong column? I also used some weak springs on it and they were coil bound before 350 lift so I stopped at .300 on that head.
 
ole4 said:
I got 51.80 on the stock clone head isn't that close? Unless you are reading the wrong column? I also used some weak springs on it and they were coil bound before 350 lift so I stopped at .300 on that head.
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That's normal stock head, I'm saying the Hemi head seems low, by about 5cfm.
 
I have another one I got from Gerald I will try it and see how it does. Mine had some machining edge on the port that I saw after it was already off the bench. I was surprised at how little improvement I saw as well but it may well have been the edge that was left between the port runner and the bowl machining.
 
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