68 Impala + 96 vortec. gastank and fuelpunp? - Impala Tech
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post #1 of 2 (permalink) Old 07-19-2015, 12:03 PM Thread Starter
 
 
Join Date: Jan 2015
Location: New Orleans, LA
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68 Impala + 96 vortec. gastank and fuelpunp?

Hello,
I have 68 impala and 96 gmc sierra as a "donor" car.
I have a problem with fuel pump.
The fuel pump from the truck is too "tall" it will noit fit the impalas gas tank.

I know, that gas tank from 93 impala will fit, but the the fuel pump there has different fuel pressure (41 psi) as needed for vortec engine (60 psi).

Should i get the gas tank from 93 impala with the fuel pump assembly and replace just a fuel pump with vortec fuelpump?

Thank you!
danil_netu is offline  
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post #2 of 2 (permalink) Old 07-19-2015, 02:16 PM
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Join Date: Jan 2006
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I would use an aftermarket in tank fuel pump from Holley or Aeromotive that offers the pressure you need. All EFI systems whether TBI or port injected require high (higher than a carburatored system) fuel pressure to atomize the fuel. They also require a return line to return the unused fuel to the tank with the fuel pressure regulated by an adjustable valve located on the return line.

Big Dave
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