Do I need to install an electric fuel pump
 

I am running a mechanical fuel pump right now with a Holly carb on an engine with 350 HP output. Do I NEED an electric fuel pump to improve performance? Thanks all.

Re: Do I need to install an electric fuel pump
 

No. I run a Holley mechanical in a 550 + 496 bb in my Chevelle never had a fuel starvation problem . I did however put larger fuel lines from the tank to the pump

Re: Do I need to install an electric fuel pump
 

What does improve mean?
Your motor only needs a little fuel. Higher pressure or more volume isn’t really needed.

Re: Do I need to install an electric fuel pump
 

My vote would be to save your money and stay with what you have.

Re: Do I need to install an electric fuel pump
 

Improve would mean make better in some way, thanks all for the advice, it seems to be just fine, 8lbs but the gauge I installed before carb bounces so there is that but it runs fine. Thanks again.

Re: Do I need to install an electric fuel pump
 

Have you tuned for altitude?
Jet leaner and optimize your timing?

Re: Do I need to install an electric fuel pump
 

oh yeah, just thought there might be other imperatives I was unaware of.

Re: Do I need to install an electric fuel pump
 

The fuel pump has poppet valves in it, so pulsing in the fuel pressure is to be expected.

Re: Do I need to install an electric fuel pump
 

Got it, thanks all!

Re: Do I need to install an electric fuel pump
 

nope

Re: Do I need to install an electric fuel pump
 

The only time you need an electric fuel pump with a stock-ish carb setup would be with 10% ethanol fuel and hot weather. The ethanol makes the fuel tend to vapor lock. Even with only 7 psi the fuel is under pressure and helps protect against vapor lock. I lived in North Texas and would drive to work in the morning no problem. Headed home at 4 and the truck would quit half way home. Cooled down and started right up. Added the pump and covered the fuel lines and problem solved.