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10-18-2021, 07:48 PM | #1 |
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Join Date: Jan 2013
Location: Columbia, SC
Posts: 1,926
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Road draft tube conversion.
I’ve read lots of stuff about converting an engine draft tube to PCV. Some folks put a freeze plug in the big hole where the tomato can baffle goes and just use modern rocker covers with a breather and PCV system. Of course that works just fine and is an option that makes sense.
For me, I wanted to use the original 283 Chevy script valve covers which don’t have a hole for a PCV or oil fill. The 283 oil fill tube up front has a breather cap already. Vendors sell a road draft tube adapter. It wouldn’t be hard to fabricate a piece that would work just as well as what the vendors sell. Basically it’s a domed cap for the draft tube hole with a nipple on the side. Then you run a 1/2” vacuum hose to a PCV that connects to the carb base with a 45* or 90* fitting. That supplies sips of manifold vacuum to the road draft setup. I hope you like the pics.
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My 65 C10 build: www.lugnutz65chevystepside.weebly.com Want to know more about T5 transmissions? My website has a T5 Info Page and a Step by Step T5 rebuild. Last edited by Lugnutz65; 10-20-2021 at 04:34 PM. |
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