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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!
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| | | | Joined: Mar 2014 Posts: 4,489 Moderator, Electrical Bay | | Moderator, Electrical Bay Joined: Mar 2014 Posts: 4,489 | Don, the PCV I added to the 235 didn't make much noticeable difference in the running. At least not yet. It runs leaner...and I expected that, but the engine vacuum isn't much lower. I used a 3/8 inch hose from the intake manifold to the modified crankcase draft tube and then I used a 1/4 inch reducer at the valve cover because I wanted more negative pressure inside the engine. It seems to be doing ok and as the engine has been rebuilt there's not a great amount of blow-by anyhow. Good luck.
Jon
~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
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