What fuel pump to run on a mostly stock motor?

Unit 5302 · 09-06-2001, 07:00 PM

The 255 will create additional strain on the fuel pressure regulator. It will also create hot running conditions on the pump itself, making it more prone to premature failure. Mostly due to the stock fuel system being unable to flow the 255lph properly, thus creating more resistance to the pump in the lines. This would especially be the case when the tank is low on fuel. Extra heat from the pump working harder, along with low fuel that isn't cooling the pump properly could significantly shorten the life of the pump. There is also an additional drain on your electrical system. Not a big deal, but it's there.

They did an article on this years ago in Muscle Mustang and Fast Fords.

By the way, the stock 88lph-92lph pump will safely support about 260hp. A 110lph for up to about 300hp, 155 will allow you to do over 400hp, and a 190lph should be okay for 500. Now that's all naturally aspirated, if you go forced induction, you may want a little more.

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09-06-2001, 07:00 PM	#1
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	The 255 will create additional strain on the fuel pressure regulator. It will also create hot running conditions on the pump itself, making it more prone to premature failure. Mostly due to the stock fuel system being unable to flow the 255lph properly, thus creating more resistance to the pump in the lines. This would especially be the case when the tank is low on fuel. Extra heat from the pump working harder, along with low fuel that isn't cooling the pump properly could significantly shorten the life of the pump. There is also an additional drain on your electrical system. Not a big deal, but it's there. They did an article on this years ago in Muscle Mustang and Fast Fords. By the way, the stock 88lph-92lph pump will safely support about 260hp. A 110lph for up to about 300hp, 155 will allow you to do over 400hp, and a 190lph should be okay for 500. Now that's all naturally aspirated, if you go forced induction, you may want a little more.