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Old 03-25-2026, 11:21 PM   #2
tubman
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Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 12,137
Default Re: 59A/B intake Pcv valve conversion

It is a known fact that the crankcase ventilation is totally different between the later 8BA type flatheads and their earlier brethren. Here are a couple of diagrams showing each type. Keep these in mind when considering this project.

I believe a couple of guys on here have done it by mounting the PCV valve in the valley under the intake and running some plumbing. I have no idea how effective it is.
Attached Images
File Type: jpg Early Flathead Breathing.jpg (25.7 KB, 41 views)
File Type: jpg Late flathead breathing.jpg (35.6 KB, 40 views)
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