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#1 |
haha, ford guys...
Join Date: Feb 2007
Location: Visalia, CA
Posts: 576
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stock psi for mech. fuel pump?
can some one tell me how many psi the stock mechanical fuel pump makes on a non computer controlled 1/2T 350?
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#2 |
Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
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Re: stock psi for mech. fuel pump?
They vary but it should between between 5-7 psi. some lower some higher.
__________________
Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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#3 |
The One And Only !!!
Join Date: Jan 2007
Location: Hole in the woods Florida
Posts: 4,567
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Re: stock psi for mech. fuel pump?
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93 Jeep XJ 88 Buick La Sabra Toys; 88 TA-GTA in the works.... 97 GMC Ext. Cab 502 Crate 5 Spd......Sucks Gas But Haulz Azz ! ![]() The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic. "Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
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#4 |
haha, ford guys...
Join Date: Feb 2007
Location: Visalia, CA
Posts: 576
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Re: stock psi for mech. fuel pump?
really? i figured it to be higher? 7only huh?
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#5 |
The One And Only !!!
Join Date: Jan 2007
Location: Hole in the woods Florida
Posts: 4,567
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Re: stock psi for mech. fuel pump?
Yep 7 lbs, That's the max pressure on the Demon carb sitting on my 502. Much over that will result in running rich/flooding.....
__________________
93 Jeep XJ 88 Buick La Sabra Toys; 88 TA-GTA in the works.... 97 GMC Ext. Cab 502 Crate 5 Spd......Sucks Gas But Haulz Azz ! ![]() The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic. "Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
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#6 | |
Registered User
Join Date: Jan 2010
Location: duluth,ga
Posts: 201
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Re: stock psi for mech. fuel pump?
Quote:
![]() im just jealous Last edited by diponyou; 02-21-2010 at 11:53 PM. |
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#7 |
The One And Only !!!
Join Date: Jan 2007
Location: Hole in the woods Florida
Posts: 4,567
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Re: stock psi for mech. fuel pump?
Sorry, I only mentioned it to use as reference to even a big block runs low fuel pressures as well.
If ya believe that one I'll tell ya another..... ![]()
__________________
93 Jeep XJ 88 Buick La Sabra Toys; 88 TA-GTA in the works.... 97 GMC Ext. Cab 502 Crate 5 Spd......Sucks Gas But Haulz Azz ! ![]() The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic. "Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
Last edited by Restrorob; 02-22-2010 at 12:07 AM. |
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#8 |
Registered User
Join Date: Jan 2010
Location: duluth,ga
Posts: 201
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Re: stock psi for mech. fuel pump?
ahahahaha
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#9 |
haha, ford guys...
Join Date: Feb 2007
Location: Visalia, CA
Posts: 576
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Re: stock psi for mech. fuel pump?
awesome, thanks guys!
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#10 |
Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
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Re: stock psi for mech. fuel pump?
The fuel pressure has nothing to do with the engine size. Carburetors cannot handle more than 7psi in most cases because it will push the needles off the seat and flood the carb. The only exception would be spring loaded needles and seats used in off road and race carbs but even they will get pushed open with fuel pressure too high. Edelbrocks are finnicky too they dont like more than 5.5psi or they will run rich at idle.
__________________
Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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