JW3

how are yall using the holley blue pumps as a pusher pump for the lift pump?? these pumps only show 14psi at max output is that enough?? I understand the install, but are yall using a pressure regulatot and why if the psi rating are only 14psi. thanks for any info yall could shine on my cloudyunderstanding..

remarc31

We've relocated several OEM pumps using the Vulcan kit. The ones that were moved a year ago until about 4 months ago has 15 to 15.5 psi at idle.
Most recent ones reads 13.5 to 14.0 psi. (I read on a forum that revisions were made on the OEM pumps which may be the reason for lower pressure).

blackdiesel

when you use the holley as a pusher with a stocker, you will end-up with around 25 psi at idle, and 20 at WOT

JW3

thanks for what info u gave me,but are yall piggybacking the hot wire on the lift pump to use as a trigger on the pusher pump relay?? If not, how are u wiring, have u had success using a pusher pump to go along with the oem pump? I am having hell with lift pumps and I dont mind spending the money as long as i get results.this truck is my daily driver /work truck so I have to plan any down time as it affects my money making. thanks again for any info..

H2SRDMB

im running both pumps together.. i wired a whole new circuit with a switch under the dash... ( antitheft idea) i also will hook up a switch soon to go in my custom console im making! i see 28 psi at idle and 23-24 psi wot but its slowly dropping as i burn in a new pump!