Calling all Carb convertors!

[LM7LSCSE]

What works better with a carb converion a electric or mechanical fuel pump?

I've heard people that say the Holley Red or Blue pumps work fine with a carb conversion, but I have also heard that mechanical is the best way to go.

I have also heard of using the existing fuel pump in my tank and buying a pressure regulator and that should work also.

I have 3 ways to go, which is the best and most trouble free(simple)?

 

[Stang8URMPRT]

You can run a mechanical if you have the timing cover for it. I run a holley blue, and it works fine.

Nick

 

[Jameasun]

I went to a elec. pump. I like to know that I will not run out of fuel. Plus with a turn of the key the system is pressurized without the motor running.

 

[Boss 351]

I went with a Holley red elec. fuel pump located on the frame rail behind the gas tank. I took out the pickup assembly and replaced the stock fuel pump with a stainless pipe with an angle cut at the bottom, it basically fit in the little rubber pipe near the top of the pickup assembly.

You can use the existing line (not the return line, use the larger of the two lines).

I went with carb at first with my 4 banger to V8 swap but I'm converting to EFI

 

[crazypete]

Well, my philosphy is that if one is taking the time to convert from an electronically metered engine into a mechanical metered one...go all the way without compromises. You will need a relay to run this pump and having a FP relay just adds wiring to the equation. The mechanical pumps are a lot more straightforward and simple and dont even require a pressure regulator and mine has lasted 3 years and counting, doesnt need a return line and pumps volume proportional to engine speed, which is exactly what you want. An electric pumps constant volume.

You dont need the pump running with the engine off. It would be counter-productive and would require you to run a return line or a FPR so you dont overpower the float needles or build pressure. The carb already has gas in it sitting in the bowls. Even if the carb is bone dry, a few cranks on the motor will introduce enough gas to start the motor and pump the bowls full.

Cover plus pump plus eccentric ran me $120

Just my .02