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Jul 21st, 2025 | | | | Joined: Oct 2008 Posts: 88 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2008 Posts: 88 | I hope im identifing this part correctly. I have a 1962 235. This is the can looking deal sticking out the side of the block by the distributor. I call it the crankcase vent. All the pictures ive seen of this part have the hose coming out of it pointing down toward the ground. The hose on mine comes up and over the valve cover to the bottom of the carb. Which way is correct. This truck was built and lived its whole life in california if that makes any differance.
Thanks for the help.
I will be getting a shop manual to help me with some of these dumb questions.
Darin | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | yes the roaddraft tube is a crankcase vent - factory would be a metal tube about 1.5" straight down .... in California it wouldn't be a suprise to find 235's with "PCV" devices of various designs, might even be factory
Bill | | | | | Joined: Sep 2001 Posts: 29,262 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,262 | Darin, The standard road draft tube was all metal with a metal draft-tube coming out the side and directed towards the ground.It sounds like you have a PCV set-up that may or may-not be original (I think the factory PCV system was only available on a 261, I might be wrong). Are you able to post or email pictures (I'll post them for you, if you want)? This is not a dumb question - but, a Shop Manual is a necessity. You might find that the 1962 manual is a supplement to an earlier manual (1960 plus two supplements). They show up on eBay and are available from reproduction parts vendors. Tim | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | At one time Califonia made everyone retrofit a PCV system on all the older vehicles.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | The PVC system also saw use on the Forward Control 235s (3400/3500/3700).
Bill Burmeister
| | | | | Joined: Oct 2008 Posts: 88 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2008 Posts: 88 | Thanks for all the info guys.
Darin | | | | | Joined: Jul 2007 Posts: 461 Shop Shark | | Shop Shark Joined: Jul 2007 Posts: 461 | Yes, the PCV system was a required retrofit in California. That is probably what yours is. That requirement was passed in 1963 or 1964 for emission control.
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