Flow numbers for stock heads? - 460 Ford Forum
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post #1 of 2 (permalink) Old 01-19-2006, 07:46 PM Thread Starter
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Flow numbers for stock heads?

Hey guys, wondering whats the flow numbers for stock C8VE heads, stock valve sizes. How much would a gasket match porting on the intake and exhaust with polishing the exhaust help the numbers?

Stock valve sizes are 2.? intake and 1.? exhaust ?

And what should pressure drop in H20 be set at 20 or 25?, im dynoing a combo for my buddy and his F350 build.

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post #2 of 2 (permalink) Old 01-20-2006, 02:01 AM
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RE C8VE flow numbers

Stock as cast early castings flow abut 279/129 max.

See this link to my website for cylindre head flow comparisons.


Here is a link to cylinder heads information specifics:


The RHP site has full porting instructions for the iron street castings. Others here can attest to the value of the information and its minimal cost. Porting the BBF heads is a bit more involved that port matching and polishing. Shape is critical especially on the exhust side.

The link to my home page is in my signature line.


Scotty J. "AKA" The "Mad Porter"
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Ported BBF iron head specialist & Aluminum heads from all sources.
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See our products in the Vendor for sale section
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