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help needed for mounting external pump

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Old Dec 10, 2004 | 04:43 PM
  #1  
crewguy's Avatar
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From: Meridian, MS
help needed for mounting external pump

I am working with my son on his 86 Z28. He has swapped from TPI to carb. He mounted a regulator and gauge on the fenderwell to use the pump in the tank. Well, the pump died and now he wants to go ahead and mount an elec. fuel pump and filter near the tank. What I need is some ideas and,or pics of what would be the most sanitary way to mount this setup. Also, which pump and filter would be the best for ther money. He is going to run this car on the street, but it's not his daily driver. The motor is a 355, mildly warmed up. Any input on this subject would be welcomed because I don't want him riding around in a deathtrap! Thanks
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Old Dec 10, 2004 | 08:36 PM
  #2  
ThommyDee's86Z's Avatar
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From: Kansas City Mo
Car: 86 Z28 w/ T Tops
Engine: 305 SB w/ Performer intake 3701
Transmission: 700 R4
Axle/Gears: stock
You can get a 5-9 psi pump for $30.00 at auto zone. Your wiring is already there, going to the intank pump.
Mount the pump to a frame rail and replace all your hoses at the tank. There should be 1 feed hose, 1 return hose, 1 vapor filter hose and 1 other.
Directions are in the box.
I think it is 3/8 hose for the pump.
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Old Dec 11, 2004 | 06:34 AM
  #3  
IHI's Avatar
IHI
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From: Waterloo, Iowa
Car: 86 firebird with 98 firebird interi
Engine: pump gas 427sbc Dart Lil M 13.5:1
Transmission: Oldani TH400 w/ BTE 9" convertor
Axle/Gears: 31 spline Moser/full spool/4.11Rich
I have alot of freinds running Holley Blue pumps to a dead headed fpr and they seem to hold just fine. They're powering cars running low 11's and see street duty when they get the chance.

This is where I have mine mounted, easily accessible if there's ever a problem.
Attached Thumbnails help needed for mounting external pump-bird-pre-track-debut  
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Old Dec 11, 2004 | 09:21 AM
  #4  
jksstar's Avatar
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From: Foley, Al.
Car: 1985 IROC Z28 and 99 Nissan Altima
Engine: 305 TPI / KA24DE on N2O
Transmission: 700r4
you don't have to take the old pump out ?
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Old Dec 11, 2004 | 10:12 AM
  #5  
IHI's Avatar
IHI
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From: Waterloo, Iowa
Car: 86 firebird with 98 firebird interi
Engine: pump gas 427sbc Dart Lil M 13.5:1
Transmission: Oldani TH400 w/ BTE 9" convertor
Axle/Gears: 31 spline Moser/full spool/4.11Rich
yes, otherwise it's a restriction that will eventually burn up the new pump.
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Old Dec 11, 2004 | 12:13 PM
  #6  
88IROC350TPI's Avatar
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From: Pitman, NJ
Car: '89 IROC-Z
Engine: Canfield 195 headed 358ci
Transmission: TH350, Art Carr 9.5"
Axle/Gears: 3.92 Dana 44
I took out my old intank pump and replaced it with a length of rubber hose fed through the pump bracket. On the factory tank's supply line there is hard lines coming out of the top of the tank which go into a foot of rubber line, then back into hard line. What I did was took the hard line coming off the tank and used a metric-to-AN fitting sold by Earl's to connect it to braided line. From there it went into a Holley Blue pump then back up to the factory rubber line using another Earl's conversion fitting. Dont know if what I just wrote made any sense but if you go and look under the car you'll see what I'm talking about. If you need the part numbers I can get them for you.

In the end, I've had 2 Holley blue pumps fail on me in a year. I know some guys who've run them for many many years trouble free, but I guess I'm not as lucky. After the 2nd one died I got fed up and installed a nice simple $55 Holley 110gph mechanical pump. This is what I'd recommend. No wiring, less plumbing, and in the end its many times more reliable and safe (motor off, pump off)

After my electric pump nightmares I began building my car based on the "KISS" method. Keep It Simple, Stupid.

Last edited by 88IROC350TPI; Dec 11, 2004 at 12:15 PM.
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Old Dec 11, 2004 | 12:14 PM
  #7  
ThommyDee's86Z's Avatar
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From: Kansas City Mo
Car: 86 Z28 w/ T Tops
Engine: 305 SB w/ Performer intake 3701
Transmission: 700 R4
Axle/Gears: stock
not necessarily.
If you have ever dropped a tank, it is worth taking a chance.
An extra $30-100 is worth paying to keep from dropping a tank.
I know I did it last week. 2 days and 6-8 hrs later I would not want to do it again. Especially if you do not have help.
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Old Dec 11, 2004 | 12:19 PM
  #8  
88IROC350TPI's Avatar
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From: Pitman, NJ
Car: '89 IROC-Z
Engine: Canfield 195 headed 358ci
Transmission: TH350, Art Carr 9.5"
Axle/Gears: 3.92 Dana 44
Oh yeah, I forgot to mention that I intially attempted to run my Holley Blue with the factory intank pump still in the tank. The pump worked but was VERY loud. I was also using a Mallory return-style regulator to take some stress off the pump. With the intank pump out the Holley pump was only a little bit louder than the stock pump.
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