Tom, Steve K., and Listers,
While Steve K.'s answer makes some sense, that is NOT the way that
Edelbrock and Doane Spencer handled the F4B factory and dealer kit
installation. Since the carbs they chose to use were too early to have
PCV carb base fittings, no riser will actually fit without hitting hood
with air cleaner sides, and those rear ports are really too close to the
firewall to trust a fitting to, they did indeed drill and tap that
blank prepared runner boss for just that use. I am at a loss to
explain their rationale, but there it is.
Steve L.
Tom Witt wrote:
> Both Steve's give important information. I have a 'free breathing" setup
>in my 1963 Rambler and in the interest of getting rid of said fumes
>connected a quick fix PCV valve to a "convenient" tap on the end of a long
>straight 6 manifold. It did lean out because there was not an equal
>distribution of the "air leak" the valve creates. Vacuum assisted devices do
>not leak (well, in theory a very small amount of extra air is provided on
>activation - if you want to split a hair) and can often be used on a runner.
>Even there, on a runner, at a very low idle, they MAY pulse and depending on
>the purpose could possibly affect the intended function.
> In addition to the PCV benefits Steve L. presented I wonder (it is just a
>thought) if the oil vapors can also be beneficial to valve seat life???
> Tom Witt B9470101
>
>
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Steve Laifman
Editor
http://www.TigersUnited.com
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