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#1 |
Registered User
Join Date: Oct 2007
Location: Sherwood Oregon
Posts: 1,908
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Gen III Question
If you install an LS- based motor, but you use a carb'd intake, what do you do for a fuel pump? Is there on on the motor?
On a side note, how much power can the stock gas tank support? Is it limited by anything? |
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#2 |
Registered User
Join Date: Nov 2007
Location: Sask Canada
Posts: 1,666
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Re: Gen III Question
you would use an electric fuel pump (low psi pump)
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Trueman |
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#3 |
Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,525
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Re: Gen III Question
Basically you run an electric fuel pump. They have fuel pumps that put out low pressure for carbs, I'd still run a regulator though.
They do make a front mount distributor set up that also allows you to run a distributor, but it's VERY spendy. |
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#4 |
Registered User
Join Date: Oct 2007
Location: Sherwood Oregon
Posts: 1,908
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Re: Gen III Question
Ok so it just needs an electric pump. Would that be in the tank or inline?
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#5 | |
Registered User
Join Date: Jun 2008
Location: Jackson, Ca.
Posts: 674
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Re: Gen III Question
Quote:
I've never heard of a low pressure in-tank pump, but I could be mistaken.
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#6 |
Registered User
Join Date: Apr 2008
Location: texas
Posts: 127
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Re: Gen III Question
i have a aluminum tank under the bed...it does have pump inside..not to high pressure just stock 40-45 psi...i not its not the weakest but dont think its real strong...just needs to supply for my 350 tpi. i know i dont got the big daddy LS but just my lil bit of info
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#7 |
Registered User
Join Date: Jun 2008
Location: Jackson, Ca.
Posts: 674
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Re: Gen III Question
That is extremely too much pressure for a carb. It needs to be in the 5-7 psi range at best.
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Cable -K5 Blazer 2wd: 6.0 LQ4, 7875 Turbo, Tick Stage II Turbo Cam, Built 4L80e, RevMax Billet 3600, 9.5" 14 Bolt -Chevy 3+3 Crew Cab Dually: Cummins 12v P-Pump Swap, Compound Turbos, A2W Intercooler, NV4500HD, 4wd conversion, Radius Arms, Coilovers, Crossover Steering, etc Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=803608 |
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#8 |
Registered User
Join Date: Oct 2007
Location: Sherwood Oregon
Posts: 1,908
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Re: Gen III Question
Ok so if I put a fuel tank under the bed, I just put a pickup in the tank and an inline pump outside?
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#9 |
Registered User
Join Date: Jun 2008
Location: Jackson, Ca.
Posts: 674
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Re: Gen III Question
Correct and as close to the tank as possible.
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Cable -K5 Blazer 2wd: 6.0 LQ4, 7875 Turbo, Tick Stage II Turbo Cam, Built 4L80e, RevMax Billet 3600, 9.5" 14 Bolt -Chevy 3+3 Crew Cab Dually: Cummins 12v P-Pump Swap, Compound Turbos, A2W Intercooler, NV4500HD, 4wd conversion, Radius Arms, Coilovers, Crossover Steering, etc Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=803608 |
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#10 |
Registered User
Join Date: Oct 2007
Location: Sherwood Oregon
Posts: 1,908
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Re: Gen III Question
Alright sweet, thanks for the info. Im taking notes and making plans ;D
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#11 |
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![]() Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,846
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Re: Gen III Question
You could use an in-tank TBI pump. It has an output of 12-14 psi. You will still have to run a regulator to drop it to 4-7 psi.
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