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10-19-2006, 02:00 PM
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#1 |
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Registered User
Join Date: May 2002
Location: Stockton, CA
Posts: 169
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fuel pump -- stock or aftermarket HiPo
I'm gaving problems getting fuel to my Edelbrock 600cfm and need to replace -- here's the dilemma ... When should I upgrade to an aftermaket 7-8 psi mechanical vs the stock 3-4 psi mechanical pump OR even electric ?!!!
Yes, my engine is slightly modified : intake, headers, cam, exhaust, HEI ... Let me know what you think.
__________________
71 C/10 : 350 / 700r4 ; Ford 9" posi 3.50 with 31x10.5 rear tires, single drive shaft, C-notch, 2.5" drop spindles, keyless entry 71 Suburban 350/350 -- caddy tail lights, keyless entry, late model seats, billet Autometer instrument cluster 70 Ford Torino -- 351W (balanced & blueprinted ), C4, VDO gauges |
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10-19-2006, 02:18 PM
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#2 |
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Registered User
 
Join Date: Aug 2005
Location: Philly
Posts: 1,140
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Re: fuel pump -- stock or aftermarket HiPo
My 350 has been modded and the stock fuel pump does fine getting fuel to my Edelbrock 1406 carb.
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10-19-2006, 02:44 PM
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#3 |
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Registered User
Join Date: May 2005
Location: Beaverton, OR
Posts: 3,728
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Re: fuel pump -- stock or aftermarket HiPo
When my fuel pump works, the stock one is fine. I replaced it a few months ago and it's acting up again.
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10-19-2006, 02:52 PM
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#4 |
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Senior Member
Join Date: Jul 2006
Location: Leander, Texas
Posts: 850
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Re: fuel pump -- stock or aftermarket HiPo
You "should" be fine with the stocker pump. I had a pretty decent 383 with a stock pump on it and it ran fine. On my current small block I went with a low pressure(5-6psi) Carter pump and love it.
When you say it's acting up what do you mean? Do you have any bends in the line? Also, if you have a 90 degree fitting coming out of the pump to the carb you're loosing up to 30 percent flow. Try a radial mandrel bent one if you don't already have one. 
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10-19-2006, 03:03 PM
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#5 |
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Post Whore
Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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Re: fuel pump -- stock or aftermarket HiPo
I'd give Eldebrock a call - seems most carbs are happy with the stock pressure. I believe the quadrajets actually have problems when you get to higher pressure than stock.
__________________
1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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10-19-2006, 03:06 PM
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#6 | |
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Senior Member
Join Date: Jul 2006
Location: Leander, Texas
Posts: 850
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Re: fuel pump -- stock or aftermarket HiPo
Quote:
Haven't ever mentioned it, but your ride is freakin' awesome!!!!!! Love the bed. A buddy of mine has a '72K5 and it's making want a 67-72 4X4 bad!!!! |
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10-19-2006, 03:12 PM
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#7 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: fuel pump -- stock or aftermarket HiPo
You don't want to raise the pressure on an edelbrock either, some stock fuel pumps have too much pressure.
Get a stock replacement, you'll be fine. |
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10-19-2006, 04:37 PM
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#8 |
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Registered User
Join Date: May 2002
Location: Stockton, CA
Posts: 169
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Re: fuel pump -- stock or aftermarket HiPo
OK -- cool ... thanks for ALL the input !
What do you mean by a mandral radial bent line ..... a line that has more of a rounded , flowing bent vs a sharp 90 off the pump ? THANKS !
__________________
71 C/10 : 350 / 700r4 ; Ford 9" posi 3.50 with 31x10.5 rear tires, single drive shaft, C-notch, 2.5" drop spindles, keyless entry 71 Suburban 350/350 -- caddy tail lights, keyless entry, late model seats, billet Autometer instrument cluster 70 Ford Torino -- 351W (balanced & blueprinted ), C4, VDO gauges |
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