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[oletrucks] '57 235 PCV

To: oletrucks list <oletrucks@autox.team.net>
Subject: [oletrucks] '57 235 PCV
From: J Forbes <jforbes@primenet.com>
Date: Thu, 11 Nov 1999 22:55:04 -0700

The 55 CAR assy manual shows RPO 417 (positive crankcase ventilation)
rigged as follows:

The vacuum tube connects at the manifold, where the vacuum wipers
connect, then runs across to the PCV valve at the top of the "draft
tube"...it is a different tube than the normal one, with no lower draft

The other hose connects from the air cleaner to the fitting on the side
of the valve cover.

Keep in mind that PCV was retrofitted to lots of California cars...so
you may have an oddball non-Chevy setup.  

To make PCV work, you need to get the airflow to go thru the crankcase,
so just running it thru the valve cover won't accomplish too much.  I
don't know if the setup you have will work very well, if it just
connects to two places on the valve cover.  Perhaps you might want to
tie it to the road draft tube somehow.


Original Message:

Date: Thu, 11 Nov 1999 17:15:09 -0800
From: "W&D" <haist@jps.net>
Subject: [oletrucks] '57 235 PCV

I'm hooking up the jewelry on the '57 235 (car) engine I installed in a
half ton.
My question is about the Positive Crankcase Ventilation system.  There
is a
hose connection on the
left side (about mid way) of the valve cover and a lager one on the top
the rear.
I presume the hose from the side connects to the in-line PCV valve and
to the manifold below
the carb and the other one is an intake line breathing through the air
cleaner.  Am I correct in my assumptions??  If not, please clue me in!!

Thanks in advance.

Whitney Haist
Orinda, CA
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959

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