| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,076 Posts1,056,008 Members48,433 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Oct 2013 Posts: 331 Shop Shark | | Shop Shark Joined: Oct 2013 Posts: 331 | I recently acquired a '58 261 that I removed from a '58 C60 Viking. The engine was original to the truck and it has a factory PCV system on it. On the passenger's side of the block where the draft tube normally is, there is a stand pipe with no draft tube on it that has a npt fitting in it with 90 screwed into it and then a metal PCV valve screwed into that. From there it's hard-piped across the valve cover to a fitting on the intake below the carburetor. I have no doubts that its a factory setup, I've just never seen anything like it before on any engine this old. Is this a rare piece or was it common on 261's of this vintage?
1950 4100 - unrestored and driven weekly for almost no reason at all.
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | you'll find the setup in the shop manual, it was an accessory for all the I6 engines
Bill
| | | | | Joined: Jan 2016 Posts: 631 'Bolter | | 'Bolter Joined: Jan 2016 Posts: 631 | Yup .......even back in 58' they realized sucking the condensation and combustion byproducts out of the crank case had real merit and huge benefits. | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Yup ....... even back in '48 (for one model GM truck - model 3742). | | | | | Joined: Nov 2011 Posts: 1,611 'Bolter | | 'Bolter Joined: Nov 2011 Posts: 1,611 | Even the WW2 Chevy 235 in late 1942 used a PCV system. | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | I think 1948 was the first year as standard equipment on a Chevrolet truck?
In 1952 it became an option for some other Chevrolet truck engines. | | | | | Joined: Aug 2000 Posts: 248 'Bolter | | 'Bolter Joined: Aug 2000 Posts: 248 | Also fitted on WW2 Canadian trucks for the 216.......
Merry Xmas everyone.
Bob C.
CMP Heaven
The Hammond Barn
| | |
|
|
| |
