Mechanical Fuel Pump...2 Line? 3 Line ?

R

Ronno6

Member
It has been a long time since I messed with this stuff, and much has changed.
I need a new fuel pump for my modest 355 SBC w/carb project.
My 84 C10 w/carbureted 305 has 3 lines connected to the stock pump.
Do I conclude that the 3rd line is a return?
Many sellers show 2 line and/or 3 line pumps, but no mention of that is found in descriptions.

I would have to believe I need a 3 line pump??

BTW, what does the charcoal canister do?
Mine has been disconnected from the vacuum system.
Do I keep/replumb or remove?
 
https://www.jegs.com/i/Chevrolet-Performance/809/6471216/10002/-1

reading the links posted below should help,
the vapor line to the charcoal canister is to remove vapors from fuel tank vent line,
escaping from the fuel tank as the internal volume of fuel changes with heat and engine use, its not connected to the fuel pump lines, crank case ventilation, and PCV and charcoal lines are different emissions system as is the fuel supply and return lines
charcoal.jpg

charcoal1.gif


http://www.enginebasics.com/Engine Basics Root Folder/Crankcase Ventilation.html

0900c1528018d190.gif


http://garage.grumpysperformance.com/index.php?threads/setting-up-your-fuel-system.211/

http://garage.grumpysperformance.com/index.php?threads/how-big-a-fuel-pump-do-you-need.1939/

http://garage.grumpysperformance.co...ts-inside-a-manual-fuel-pump.5365/#post-16067

adding a fuel pressure gauge.

I wanted to install a mechanical fuel pressure gauge on my 91 L98 TPI. Sometimes the car don't start (driven infrequently) and I want to know at a glance if I got fuel pressure. I wanted the gauge to be visible from the drivers side, and not interfere with removing the valve covers. ended up...
garage.grumpysperformance.com

http://garage.grumpysperformance.com/index.php?threads/fuel-pressure-regulators.635/

http://garage.grumpysperformance.com/index.php?threads/return-line-in-fuel-system.14125/

viewtopic.php?f=80&t=1219&p=2584#p2584

viewtopic.php?f=52&t=2005&p=5328&hilit=positive+crankcase#p5328

viewtopic.php?f=87&t=4636&p=12451#p12451

http://garage.grumpysperformance.co...breather-hole-in-valve-covers.2005/#post-5328

viewtopic.php?f=54&t=694&p=965&hilit=positive+crankcase#p965

viewtopic.php?f=54&t=2207&p=12639&hilit=+vacuum+crankcase+pump#p12639

http://auto.howstuffworks.com/positive-crankcase-ventilation-system.htm

viewtopic.php?f=53&t=4630&p=39780&hilit=+maximize+seal#p39780

viewtopic.php?f=54&t=10646&p=45917&hilit=seal+ring#p45917

viewtopic.php?f=53&t=509

viewtopic.php?f=53&t=5454
 
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