I read somewhere that someone was running a holley blue and stock lp on the same line. with the holley pushing fuel to the stock pump. Does anyone know if that'll work. I am asking cause my stock lp was put on in september and i got a holley pump collecting dust on the shelf, right next to the 1/2'' fuel line for it.

 

I've been running it this way for almost 2 years. 16psi of fuel @ idle and 14WOT.

 

I run the holly blue and stock lift pump too. It's going on 5 years now with no failures. The trick is to wire the holly off a relay using the power wire on the lift pump harness as a trigger for the relay, that way both pumps will respond to the ECM.

 

Cool are you guys using a drawstraw or just stock pick up? Should i use the 1/2 line that i have also or 3/8?

 

I used 3/8 line to the stock pickup.

 

Yep stock fuel line. I also removed the banjo bolts from the fuel filter to the VP and drilled the holes out for added fuel flow volume.