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Charcoal / vapor / evap canister, how it should be set up and other information
Just to note, on the bottom of the purge valve, the large solo outlet indicates "tank" and the other large outlet under the small outlet indicates "CAN". Thus, I wonder if the vapor line should be plugged into this purge valve first not the canister. Vapor line would go to tank inlet on valve...- 73fleetsideABQ
- Post #46
- Forum: Engine & Performance
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Charcoal / vapor / evap canister, how it should be set up and other information
Howdy. Just for clarification, for the external vacuum purge valve shown below (Amazon ACDelco Professional 214-2294 Vapor Canister Purge Valve), the small outlet is to ported vacuum (carb), the large outlet underneath the small outlet is to PCV/manifold vacuum, and the single outlet on the...- 73fleetsideABQ
- Post #45
- Forum: Engine & Performance
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Finally got a squarebody...for my daughter
Nice purchase. I did the same thing for my son a few years ago. 1973 Chevy Cheyenne Super with original 454 and TH400. I added a mild hyd roller cam, upgraded to AFR heads, and 770 Holley with dual plane Weiand intake. Lots of time and $$ but it's been fun. Let me know if you have questions.- 73fleetsideABQ
- Post #20
- Forum: Introduction
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Charcoal / vapor / evap canister, how it should be set up and other information
Yes agree, timed is just ported vacuum above the throttle blades. It makes sense to open the valve based on timed vacuum so that you don't send vapor to carb at idle, which would make setting idle air/fuel mixture a bit challenging. Makes sense to purge vapor to full manifold vacuum as soon as...- 73fleetsideABQ
- Post #43
- Forum: Engine & Performance
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Charcoal / vapor / evap canister, how it should be set up and other information
Ah, thx for the explanation. Seems like a simple solution with a 3-port canister and external vacuum control valve. Time to drop the tanks and do it right!! Anyone know where I can find an original type canister bracket?- 73fleetsideABQ
- Post #39
- Forum: Engine & Performance
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Charcoal / vapor / evap canister, how it should be set up and other information
Thanks for your thoughts. Yeah, probably only something we would see at idle/low rpm when fuel demand is low. Yeah, when I took apart truck to paint and bed was off, I put on new tanks and single line fuel sending units since PO removed lines and vapor recovery system. Kicking myself a bit for...- 73fleetsideABQ
- Post #37
- Forum: Engine & Performance
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Charcoal / vapor / evap canister, how it should be set up and other information
Thank you for posting this information, it's extremely helpful. I have a dual tank setup and tank are not vented or have vapor lines. Vented gas caps are installed but they simply allow air into the tank when pulling fuel to avoid creating a vacuum in the tank. The tanks build up a ton of...- 73fleetsideABQ
- Post #35
- Forum: Engine & Performance
