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11-03-2020, 10:20 AM
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#1 |
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Registered User
Join Date: Apr 2010
Location: Boise, ID
Posts: 1,280
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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.
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11-03-2020, 10:38 AM
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#2 |
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Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,626
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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
__________________
Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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11-03-2020, 10:40 AM
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#3 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,706
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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. |
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11-03-2020, 11:11 AM
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#4 |
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Senior Member
  Join Date: Oct 2014
Location: Eagle, ID
Posts: 3,021
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Re: Do I need to install an electric fuel pump
My vote would be to save your money and stay with what you have.
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11-03-2020, 01:19 PM
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#5 |
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Registered User
Join Date: Apr 2010
Location: Boise, ID
Posts: 1,280
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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.
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11-03-2020, 01:32 PM
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#6 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,706
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Re: Do I need to install an electric fuel pump
Have you tuned for altitude?
Jet leaner and optimize your timing? |
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11-03-2020, 04:15 PM
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#7 |
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Registered User
Join Date: Apr 2010
Location: Boise, ID
Posts: 1,280
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Re: Do I need to install an electric fuel pump
oh yeah, just thought there might be other imperatives I was unaware of.
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11-03-2020, 11:26 PM
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#8 | |
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Who Changed This?
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,582
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Re: Do I need to install an electric fuel pump
Quote:
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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11-04-2020, 10:58 PM
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#9 |
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Registered User
Join Date: Apr 2010
Location: Boise, ID
Posts: 1,280
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Re: Do I need to install an electric fuel pump
Got it, thanks all!
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11-07-2020, 11:19 PM
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#10 |
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Registered User
Join Date: Nov 2007
Location: Indianapolis
Posts: 1,161
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Re: Do I need to install an electric fuel pump
nope
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11-08-2020, 08:45 AM
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#11 |
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Registered User
Join Date: Aug 2014
Location: Mena,Arkansas
Posts: 485
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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.
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68' with no bells or whistles unless I add'em. |
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