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06-28-2018, 03:03 PM
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#1 |
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Registered User
Join Date: Mar 2015
Location: Clovis, Ca
Posts: 5
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Fuel pressure
Is anybody using tbi fuel pump with carb? Do i need a regulator to drop the fuel pressure ?
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06-28-2018, 08:30 PM
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#2 |
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Registered User
Join Date: Feb 2011
Location: Lake Charles, LA
Posts: 61
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Re: Fuel pressure
Yes, you will need to regulate the pressure down. I know my Edelbrock only likes approx. 5psi. The electric pump puts out quite a bit more. I did this previously with my 350 and I had to use a regulator.
Mike |
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06-28-2018, 09:44 PM
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#3 |
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Registered User
Join Date: Mar 2015
Location: Clovis, Ca
Posts: 5
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Re: Fuel pressure
Thanks. I installed 87-91 blazer tank and pump/sending unit in my 78 k1500 stepside. Stock motor with edel2101 manifold and rebuilt quadrajet. I have a 4309 mallory regulator. Can i mount it by the tank? I'm eliminating the dual tanks.
Last edited by danthegmman; 06-29-2018 at 12:29 AM. |
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06-28-2018, 10:10 PM
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#4 |
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Registered User
Join Date: Feb 2011
Location: Lake Charles, LA
Posts: 61
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Re: Fuel pressure
I had mine just before my fuel pressure guage.
I used an edelbrock part: https://www.summitracing.com/parts/e...MaAhAuEALw_wcB I connected my fuel pressure guage to the 1/8 NPT inlet and on the end I used 3/8" fuel line conncted my regulator and my fuel line from the pump connected on the opposite end of the regulator. carb > fuel pressure guage> regulator > pump It worked well for me, that way I could see my pressure and adjust the regulator right at the carb. |
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07-04-2018, 12:18 AM
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#5 |
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Registered User
Join Date: Oct 2015
Location: Ottawa, Ontario, Canada
Posts: 769
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Re: Fuel pressure
Stock 5-6 psi on a mechanical pump.
__________________
 1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bedWas a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change. |
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07-04-2018, 01:37 AM
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#6 |
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Registered User
Join Date: Mar 2014
Location: Mt Dora FL
Posts: 68
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Re: Fuel pressure
my setup, its not perfect but it works
the guage isnt very accurate being mounted on the regulator, not sure where else to put it I can also hear the regulator buzz, tried to quiet it with a piece of rubber between it and the firewall but no luck I will get around to properly setting it up, eventually lol hope this helps |
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