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Author Topic: high flow oil pump and high pressure fuel pump.  (Read 2808 times)

Offline westsidek20

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high flow oil pump and high pressure fuel pump.
« on: June 21, 2011, 02:31:57 pm »
At what point do they become necessary while doing a build?
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Offline Grim 82

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Re: high flow oil pump and high pressure fuel pump.
« Reply #1 on: June 21, 2011, 03:22:11 pm »
Ideally, on a fresh build and a carbureted engine you would need neither. Carbs are meant to run with low fuel pressure, 4-6 psi or else the flow will push the needle off the seat. Fuel injection is a different story.
If you have larger bearing tolerances a high volume oil pump can help to maintain your oil pressure.
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Give a man a gun, and he might rob a bank. Give a man a bank, and he might rob the world.

Offline westsidek20

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Re: high flow oil pump and high pressure fuel pump.
« Reply #2 on: June 21, 2011, 04:24:06 pm »
So by running my quadrajet in the 383 project i wouldnt need the fuel pump, right?
And bearing clearance isnt an issue?
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Offline Grim 82

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Re: high flow oil pump and high pressure fuel pump.
« Reply #3 on: June 21, 2011, 04:50:59 pm »
The stock mechanical pump will work fine with your q-jet.
Bearing clearance shouldn't be an issue on a new build, but use plastigage to check it.
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Give a man a gun, and he might rob a bank. Give a man a bank, and he might rob the world.

Offline 1979C20

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Re: high flow oil pump and high pressure fuel pump.
« Reply #4 on: June 21, 2011, 05:28:44 pm »
I have stock clearances and im using a high volume oil pump just because.
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1979 SCLB C20 Q-jet 350 SM465 14b F.F. 4.10 G80
1989 GMC Suburban V2500 TBI350 TH400 4in lift 35's 14b SF
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