Nathan,
Regardless of the reputation of most smog control devices, the PCV is
not only innocuous, but actually beneficial in purging your sump of
corrosive fumes, as well as your engine compartment and firewall leaks
to your passenger compartment.
Plugging it will cause harm, not good, as you do not have a free
breathing oil cap to let the crankcase fumes fill your engine
compartment and passenger compartment, and your crankcase will be
pressurized with by-passed combustion product fumes, before blowing your
seals out.
Not familiar enough with the 4160 to comment on why it appears to have
taller choke towers than normal. Might try putting it alongside an 1848
or 1850 (465/600 CFM) and observe difference. Shouldn't be, unless your
replacement air filter is shorter than normal. Suggest the K&N
(http://www.knfilters.com/) replacement Part# E-2859.
good luck,
Steve
Nathan Johnson wrote:
> Thanks for the info about spacers. I put a Holley 4160 (390 cfm) on
> my F4B hi rise and the butterfly on my choke is hitting the stock air
> cleaner. I wanted to ask about PCV systems though. My PCV valve
> recently went out and I was wondering what are the pros and cons of
> having a PCV system as opposed to just plugging the hole with a
> filtered breather?
>
> Thanks,
>
> Nathan Johnson B382002343
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Steve Laifman
Editor
http://www.TigersUnited.com
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