What is the pressure that a stock Lift Pump puts out. I just installed the guage and the pump is putting out 8-9 PSI at Idle. At WOT it dropped to 1PSI. I know i'll need to replace the pump, but is the pump actually bad for a stock set-up?

 

I believe the stocker should be 14-15psi at idle, and it should by no means go below 5psi ever.
My suggestion is the FASSII. I'm 18-19 idle, 16-17 cruise, and around 14 WOT. Plus 4 year unlimited mileage warranty.

 

Yeah, my pump in stock form put out about what Moose saw-- 14-15 idle, 11-12 cruise, 5 WOT (this was with 90hp injectors, though).

Since I upgraded the lines, I know have 17idle, 14-15 cruise, 10 WOT. This is with the same stock LP.

I'm guessing my bigger injectors may need a bigger pump-- we'll see.

jlh

 

just put fuel pressure gauge in my truck. 15 psi at idle, 11-12 psi at wot. also installed boost gauge, 28psi on that one.

 

My 99 with a new LP runs 14 idle....12 cruise....9 WOT....I just ordered that Big Fueling Kit from Vulcan, will be in this week..keep ya posted on what my Fp goes to with it.....

 

Is the Holley pump any good?

 

Holley blue works good for me.Cheap too.

 

Can anyone give me a good website where I can check out the prices for the fassII system?

 

Send a private msg to Mudinford. I got mine from him.

 

http://www.protintnw.com/sa_dodgemenu.htm

Talk to Rip, and get the best price. I also had him make me a line to go from the filter canister to the VP with a tapped gauge port in it.