Will it work as a pusher to the lift pump?<br>Why or why not?<br>Seems like I have read it won't but I can't find any info.<br>TIA<br>cpermd

 

What are the specs on this pump? Do you have a link to it?

 

According to the Holley website:<br> Low pressure pumps that are perfect for NOS wet system pump <br> New tumble polished billet look <br> New lower housing casting for enhanced fuel flow <br> Improved design for street/strip applications <br> Distinctive &quot;BLUE&quot; logo <br> Flows 110 GPH (free flow) <br> Flows 70 GPH at 9 PSI <br> Pressure is pre-set at 14 PSI <br> Includes P/N 12-803 fuel pressure regulator <br> Motor draws only 3 Amps current <br> 7-1/2 Amp fuse recommended <br> Provides constant fuel flow with no pulsation <br> Has externally accessible pressure relief valve <br> Rotor/Vane pump design is more tolerant of contaminated fuels <br> Weighs only 3 lbs. <br> Includes mounting bracket <br> Repair kits are readily available <br> Can be serviced from either pump end or brush cap end <br> NOT compatible with alcohol or methanol fuels <br> Use of safety shut-off switch, P/N 12-810, strongly recommended <br> Not designed or recommended for use with fuel injection systems <br><br>I have used these on alot of 500HP Mustangs that I have built and have never really had a problem feeding them. What are the specs for the stock lifter pump? I would think it would work fine for a booster, but not sure on a replacement. What do y'all think?

 

It looked real good to me til that last sentence.<br>That is why I asked,and regulator included.<br>Seems like it should work to feed the lift pump.<br>cpermd

 

Well what I think they mean is they won't work on gasser EFI. The EFI systems on a gasser are in the 40-50 psi range where ours is in the 10-15 psi range. I think that you could just run it without the regulator since it is internally regulated for 14 psi and that should be fine for us. What do you guys think? These pumps can be had for around $100.

 

I have been looking at this and thinking about it for a month.<br>I think I will start looking for one on ebay.<br>cpermd

 

I don't understand why everyone wants to have a pusher that goes to the lift pump? Why not just get a pusher that will have the right psi and flow and go to the injection pump, eliminate the problem pump instead of adding to it. Just MHO. ???

 

Gotta agree with chuck3. I'm going to junk it all and go with a Holley Black, bigger fuel lines and banjo's. Rod has some good advice on the stuff.

 

(I havent checked my pressure yet ---I'm gonna!)<br><br>As I understand it ? The lift pump seems to fail quickly on some units. <br>Because it is (sucking) fuel from the tank? Is it a rotary vane pump? Is it experiancing cavitation? Has any body pulled a bad one apart to see what is causing the failures?<br> I have a 12 v. AC fuel pump on the shelf, leftover from a previous project . It states,* do not mount over 24 in from the bottom of the tank, and mount as CLOSE to the tank as possible.* It is only 3 &amp; 1/2 lb pressure, but as a pusher to the primary, would it&quot;s extra pressure , perhaps? help forstall the failure of the lift pump . OR - should I remove lift pump and just mount it back by the tank?? <br> I know from experiance that if there is much restriction in the suction line for a pump, it undergoes cavitation and leads to early failure. and (this Dodgeup) / hookup , reeks of some of the installations I have seen on equipment over the years.<br> I HATE Plastic lines . It looks like there are some down there.

 

Does anyone know what the fuel delivery requirements are for the injection pump? I would love to REPLACE the junk lift pump but I can't find the specs of the stock pump? Am I looking in the wrong places? Is this HIGHLY guarded info? I would think that a Holley blue or black would provide enough fuel for a moderately modified truck...say up to 500 HP.

 

Alright. I've had enough of this crappy lift pump. Mines got 785 miles exactly on it and it has dropped from 13.6 at idle to 11.6. WOT went from 6.6 to 3.4. This is with the high flow bolts installed and a new filter (it's also got 785 miles on it). ALL of them. And there are no leaks anywhere. So, what I'm reading here is to replace the stock pump with a Holley Black and to mount that pump back by the tank. Correct? That should completely eliminate any problem with the fuel supply on these trucks, right? How about replacing the fuel line with some 3/8&quot; inside dia. to help flow even more? I figure that if I'm going to be there replacing stuff, I might as well get it set up now for when I get ready to hit 12's. Who carries these pumps and all of the neccesary hardware (instructions, wiring, connectors) to install it? How hard is it to install?

 

I have been useing the Holley 815 (black) for 18 months now and it was used when I put it on. It's mounted back @ the tank and I run -AN6 lines all the way to the VP44. <br><br>Dean

 

[quote author=WeirCummin link=board=5;threadid=6416;start=0#60938 date=1036236870]<br>I have been useing the Holley 815 (black) for 18 months now and it was used when I put it on. It's mounted back @ the tank and I run -AN6 lines all the way to the VP44. <br><br>Dean<br>[/quote] <br><br><br> Good info Dean, Welcome to the site.<br> ~chuck.