The chart above shows a couple important things about an electric fuel pump.
Electric fuel pump for carbureted 454.
Electric fuel pump for mercruiser mercury 4 3 5 0 5 7 7 4 8 2 efi mpi v6 v8 305 350 377 454 502 fuels injected marine engines replaces 861156a1 sierra 18 35433 53 99 53.
Flow rate increases with voltage and amp draw increases with pressure.
The body is painted with the black logo and this model fits all alcohol or.
Holley s products also include performance fuel pumps intake manifolds engine dress up products for street performance race and marine applications.
You always want to wire a pump through a relay baker advises.
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Fortunately a little common sense goes a long way in maximizing pump reliability.
This is a classic black pump that provides 140 gph free flow and 120 gph at 9 psi the maximum pressure delivered is 14 psi this is a street and strip performance model.
Trying to run a 400 pump off of a 2 toggle switch isn t going to work for very long.
This is a gasoline and methanol model that comes with a tumble polished billet design and the lower housing casting is designed for enhanced fuel flow.
The green and blue lines show how voltage affects flow rate.
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How to install an electric fuel pump in your classic chevy.
As a single solution or partnered with products from other holley companies we can give you the edge you need over the competition.
Most carbureted systems up to this horsepower range do not use a return line.
Although a good mechanical fuel pump can feed your engine for up to 400 horsepower have an electric fuel pump can be added insurance.
Even the best electric fuel pumps on the market aren t very forgiving of poor installation practices.
We ll start by mentioning the fact that this pump comes as one connected and integrated device.
Holley 12 801 1 red electric fuel pump.
If you look at an older car with a carbureted engine you d most likely find a mechanical fuel pump.
In other words the g forces of the launch are forcing the fuel to the rear of the car while the pump tries to overcome that force.
If you re in need of a faster free flow speed for your engine but you don t want to have to pay out hundreds and hundreds of dollars the holley red electric fuel pump is an ideal choice.
Most cars with a charging system and appropriate wiring can supply 13 5 volts to the pump.