What's new
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

Fuel pump to Carburetor question?

blazindorito

blazindorito

1/2 ton status
Joined
Nov 25, 2003
Posts
2,047
Reaction score
1
Location
Southern California
I put a roller block engine in my truck and I can not install a mechanical pump on it. I currently have a electric fuel pump but it runs 125 psi which is too much for my truck. I do have a regulator on it but I still think it's too much.

Which electric fuel pump can you recommend or are using in your rig as the same config as mine????

I am running a Holley Truck avenger 660.
 
Last edited:
I'm running a stock EFI in tank pump with an inline return style regulator set at 6.5 psi. With the pressure you are running that will be quite a bit of volume through the return line though.
 
You should prolly hook it back up. I have a holley 14 psi pump with a regulator turned down to 6psi and the rest goes back to the tank. I think 125psi might be a bit much to regulate down to 4-6psi with no return line. Even with a return line I think it is a bit much. $.02
 
Which Holley pump did you use? Red, blue, black??? How is the noise on it?

Did you use a regulator?

Greg_mgm:
Where did you mount it next to? On which rail? Picture please if u can.
 
Which carburetor are you running?

I'm running a Holley blue pump (14 psi) into a regulator that drops fuel pressure to 2.5 psi into a Q-jet.

I would avoid the Holley pumps however, they are EXTREMELY noisy even when completely covered in sound insulation.
 
blue pump

I used the holley blue pump and yes it is very loud. I mounted it right by the transfer case inside the frame rail and I havn't had a problem yet. I actually ran out of gas the other day and when I filled back up the pump took about 3 seconds to prime itself. As far as the noise issue, if you could find a way to dampen the mounting between the frame and the pump bracket then I think that would quiet it down quite a bit. I don't really notice mine much anymore except when it starts hissing because it is pumping air because you don't have an operational gas gauge! :haha:
Exhaust1.jpg
 
Cool thanks fellas. I will look into installig a return line but I don't think my gas tank has a return line. Do they all have a return line mount?
 
What year is your truck? I know there wasn't a return line up until 79-80 or sometime thereabouts. My '83 has a return system.
 
Mine is an 83 but it was salvaged and I don't know what ear tank the previous owner installed. Someone stole the rig and he replaced parts into it.
 
I'll try to snap a pic later today.

As far as noise goes, you can hear it better from outside the truck, but inside while driving, road noise drowns out the pump sound.
 
You must log in or register to reply here.

Latest Posts

Top Bottom