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Fuel pump : electric vs manual

I run a small block Chevy with a Manuel pump. My idea behind it was if I sink or flip the boat it won't pump when the motor stalls. Just my thoughts, I'm sure everyone has their opinions on this
 
Not knowing what engine you run, but for an aircraft engine, a manual pump has the advantage where if the battery or alternator takes a dump, the engine will still run if it has a manual pump (assuming said aircraft engine is equipped with mags). On a car motor, you don't have that advantage. I believe a manual pump lasts longer than an electric, and that's coming from a guy that runs an electric pump on my aircraft engine (my engine came from the factory fuel injected, so I don't have a provision for a manual pump). Electric pumps have come a long way, lots of boats run them with no issues. I do carry a spare electric pump with me, and so far in 4 years I've had my current boat, I've only used my spare to loan to others who were stranded. My old boat had both (4cyl Lycoming). I used the electric pump for starting the engine, and once started, shut the electric off and it ran off of the manual, that is the best of both worlds.
 
like Kevin said it probably depends on if you are running a CM or AC . on my current AC motor I am running both mechanical and electric the electric one is this case is more of a back up. Like Kevin my electric pump has not failed me in about 4 years of use.
 
I've ran both on my sbc boats but I like the electric pump better I can shut it off n run fuel out of my carb so it's not sitting withfue in my carb for few weeks at a time when I can't ride and if ur worried about pump still pumping when something goes wrong put a pressure switch sending unit on it so if the motor goes under 5psi oil pressure it turns pump off

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I’ll have to look to see how it is routed. I can say that I can tell a difference with the new one installed. Seems to idle stronger if that makes sense.
 
Hey.... I have an SBC 350 270hp with 600cfm Quadrajet.... what make/model flow and pressure rating for electric pump should I get? Can't run manual pump because the engine mount covers it.
 
Phantom5 said:
Hey.... I have an SBC 350 270hp with 600cfm Quadrajet.... what make/model flow and pressure rating for electric pump should I get? Can't run manual pump because the engine mount covers it.

I run a Facet electric pump on my aircraft boat (FEP87SV, 4.5 - 5 psi), and a Carter electric pump (P4389, 6psi) on my Son's car motor boat (383 SBC). Neither requires a regulator, both perform as they should, both have been in service for multiple years. Some like the Holley Blue, but I've never gotten much life out of them. Just remember, most electric pumps are made to push fuel, not pull it from the tank. Mount the pump as low, and as close to the tank as possible.
 
Phantom5 said:
flcracker9, ordered the Carter. What would you recommend for a water separator for car motor airboat?

We just run a NAPA one on both my Son's car motor and my aircraft boat. Don't have the part number handy, but can get it if you need it?
 
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