External fuel pump mounting
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Joined: Apr 2007
Posts: 121
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From: Gulfport, MS
Car: 1982 Pontiac Trans Am
Engine: Chevy 350 Vortec Roller
Transmission: Turbo 350
Axle/Gears: Moser 4.11
External fuel pump mounting
I know this is a general tech area but I didn't see anything about carbuerated cars so I figured I would post it here. I'm thinking about mounting one of these Holley fuel pumps to the frame rail somewhere along the back of my car.....
http://www.jegs.com/i/Holley/510/12-700/10002/-1
Has anyone else done this? Have any pics or suggestions?
http://www.jegs.com/i/Holley/510/12-700/10002/-1
Has anyone else done this? Have any pics or suggestions?
Supreme Member
Joined: Dec 2002
Posts: 1,592
Likes: 31
From: IL
Car: 1988 Formula
Engine: 421 Little M block
Transmission: TH400 w/brake
Axle/Gears: 9" 4.30s, Wilwood discs, 28X10.5-15
Re: External fuel pump mounting
LOL ! about 13 years ago,
on a Holley projection 4Di system that I installed my 383. That engine made 465 HP 472 #ft Tq.
It is great way to do it because it is easy to service the pump without dropping the fuel tank.
This model # supports 900 HP N/A @ 8 psi.
You will also need the regulator, new fuel lines, and new fuel filter.
You will also have to enlarge the stock pick-up in the fuel tank or sump the tank.
You will be building a whole new fuel system that should be capable of flowing enough fuel to support 900 HP. that means -8 to -10 fuel lines & fittings.
So my only question observation is this:
What are you planning to do that you need this pump? because there is more to it than just throwing it on and motoring down the road.
on a Holley projection 4Di system that I installed my 383. That engine made 465 HP 472 #ft Tq.
It is great way to do it because it is easy to service the pump without dropping the fuel tank.
This model # supports 900 HP N/A @ 8 psi.
You will also need the regulator, new fuel lines, and new fuel filter.
You will also have to enlarge the stock pick-up in the fuel tank or sump the tank.
You will be building a whole new fuel system that should be capable of flowing enough fuel to support 900 HP. that means -8 to -10 fuel lines & fittings.
So my only question observation is this:
What are you planning to do that you need this pump? because there is more to it than just throwing it on and motoring down the road.
Supreme Member
Joined: Dec 2002
Posts: 1,592
Likes: 31
From: IL
Car: 1988 Formula
Engine: 421 Little M block
Transmission: TH400 w/brake
Axle/Gears: 9" 4.30s, Wilwood discs, 28X10.5-15
Re: External fuel pump mounting
"homework"
I prefer the Aeromotive or Magnafuel system planning guidelines versus Holley only because Holley stops at -8an (1/2" line) which is fine for most applications but some systems need -10 to -12...
http://aeromotiveinc.com/wp-content/...werPlanner.pdf
http://www.magnafuel.com/support/index.htm
http://www.holley.com/data/TechServi...ech%20Info.pdf
How can you plan your racing fuel system?
Use a handheld calculator and plan on .5 lbs/hp-hr. (gasoline). Methanol alcohol requires about 1.0 lbs/hp-hr. Use .7 lbs/hp-hr when planning a gasoline system for nitrous assist. EXAMPLE: You have a 650 hp engine. 650hp x .5 = 325 lbs/hr. (gasoline). Although you need to know how much your fuel weighs, assume for this example that it weighs 6.2 lbs/gal. 325 lbs/hr. ÷ 6.2 = 52.42 gal/hr. Dividing by 60 (minutes per hour) yields .847 gal/min (GPM). Check the graph and specification information for a pump selection for your application. Note that this flow number is what your engine needs at the float bowls. So you also need to check out the graphs and specs for a MagnaFuel regulator.
Back to top.
GOOD LUCK !
I prefer the Aeromotive or Magnafuel system planning guidelines versus Holley only because Holley stops at -8an (1/2" line) which is fine for most applications but some systems need -10 to -12...
http://aeromotiveinc.com/wp-content/...werPlanner.pdf
http://www.magnafuel.com/support/index.htm
http://www.holley.com/data/TechServi...ech%20Info.pdf
How can you plan your racing fuel system?
Use a handheld calculator and plan on .5 lbs/hp-hr. (gasoline). Methanol alcohol requires about 1.0 lbs/hp-hr. Use .7 lbs/hp-hr when planning a gasoline system for nitrous assist. EXAMPLE: You have a 650 hp engine. 650hp x .5 = 325 lbs/hr. (gasoline). Although you need to know how much your fuel weighs, assume for this example that it weighs 6.2 lbs/gal. 325 lbs/hr. ÷ 6.2 = 52.42 gal/hr. Dividing by 60 (minutes per hour) yields .847 gal/min (GPM). Check the graph and specification information for a pump selection for your application. Note that this flow number is what your engine needs at the float bowls. So you also need to check out the graphs and specs for a MagnaFuel regulator.
Back to top.
GOOD LUCK !
Thread Starter
Member
iTrader: (1)
Joined: Apr 2007
Posts: 121
Likes: 3
From: Gulfport, MS
Car: 1982 Pontiac Trans Am
Engine: Chevy 350 Vortec Roller
Transmission: Turbo 350
Axle/Gears: Moser 4.11
Re: External fuel pump mounting
I know you mean well but I don't need a lesson on fuel flow characteristics of the available pumps out there. I didn't provide horsepower ratings nor did I ask for flow rates of various pumps that you may think apply. My question was has anyone ever used one of these pumps and if so can you provide pics of the installation.
Last edited by tricky1; Aug 17, 2013 at 12:59 AM.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
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