Fuel Tank Vent tubes

[Pentastar Pete]

I have a 74 Challenger. I have a 4-tube vent block in front of the tank. The line from the vent block runs to the carbon canister. The canister is hollow. The previous owner put in a new 2 line sender, 3/8 main 1/4 return. He also has a vapor separator hooked up at the front of the motor.  (this car has not run yet).

What is the purose of this vent bock??
Can I run the vent block line to the return on the sender and remove the vapor seperator??
Should I keep the vapor sep. and run the return line from the sep. to the return on the sender??
What do I do with the vent block line?
 
Thanks

[Chryco Psycho]

the vent block traps fumes from the tank , it is drawn into the engine through the carbon canister & fumes are stored in the canister to be burnt off when the engine is running . you can run a separate 1/4" line from the vapor seporater to the second line on the sender & leave the rest hooked up as per stock , it will not hurt anything

[Pentastar Pete]

Thanks for the help CP, One more question:
The carbon canister is empty and the only line going to it was the fuel vent line.
The rest of the lines on the canister are not connected to anything.
Can I run it like it is, or should I be connecting the lines some where??
Can I just leave the vent line under the frame and disconnect the canister all-together?
Thanks

[Chryco Psycho]

Yes you can leave the vent in the frame & remove the canister , or it needs to be hooked to manifold vacuum & a switched vacuum to burn off fumes into the engine

[Pentastar Pete]

 
Great !!!       Thanks CP for the help..........

[Chryco Psycho]