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02-13-2018, 01:16 PM
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#1 |
 Drives: 2010 2SS RS Join Date: Dec 2016
Location: Juneau Alaska
Posts: 42
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Easy Cheap Fuel Pump 340 lph 700hp
Im looking to find more info on removing the stock fuel pump from the pump module and installing a single 340 lph pump in a ss or zl1.
I see lots of people doing it on the performance truck forums. They say the 340 lph pump will not over power the stock regulator, but the 450 will. Also the 340 lph pump has about the same amp draw as the twin pump from the cats-v. what am I missing 
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02-13-2018, 01:36 PM
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#2 |
  Drives: 2011 convertible 2ss/rs Join Date: Sep 2015
Location: Houston
Posts: 971
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I hass a ss fuel pump assembly forsale if you like to try yohr luck on that
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02-13-2018, 02:10 PM
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#3 |
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Drives: 2010 2SS RS Join Date: Dec 2016
Location: Juneau Alaska
Posts: 42
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Thanks but I have one to work with. Just got done making a access hole to the pump not sure way so many people drop the tank for pump access took me 15 minutes.
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02-13-2018, 02:11 PM
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#4 |
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Drives: 2011 convertible 2ss/rs Join Date: Sep 2015
Location: Houston
Posts: 971
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Same here on the hole
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02-13-2018, 03:51 PM
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#5 |
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Drives: 2010 2SS RS Join Date: Dec 2016
Location: Juneau Alaska
Posts: 42
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This some of the info that I came up with and please correct me if any of it is wrong.
Stock SS fuel pump 190 lph single pump Stock ZL1 fuel pump 250 lph single pump Stock CTS-V fuel pump Twin 190 lph pumps Last edited by 907 chad; 03-11-2018 at 07:04 PM. |
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02-13-2018, 04:15 PM
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#6 |
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Drives: 2010 2SS RS Join Date: Dec 2016
Location: Juneau Alaska
Posts: 42
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Quantum 340LPH Intank Fuel Pump cost $80.00 same diameter as the 250 lph and 190 lph pump
Last edited by 907 chad; 02-13-2018 at 04:32 PM. |
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02-13-2018, 04:31 PM
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#7 |
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Drives: 2010 2SS RS Join Date: Dec 2016
Location: Juneau Alaska
Posts: 42
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Aeromotive 340 fuel pump same diameter and height of zl1 pump comes in four different inlets and cost about $120.00
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02-13-2018, 04:46 PM
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#8 |
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Drives: 2011 convertible 2ss/rs Join Date: Sep 2015
Location: Houston
Posts: 971
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The key is to make sure they are pulse with modulation
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02-13-2018, 05:48 PM
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#9 |
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Drives: 2010 2SS RS Join Date: Dec 2016
Location: Juneau Alaska
Posts: 42
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Both of those work with pulse modulated and both are E85 compatible.
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02-13-2018, 06:38 PM
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#10 |
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Drives: 2011 convertible 2ss/rs Join Date: Sep 2015
Location: Houston
Posts: 971
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Awesomeeeeeeeeeeeeee
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03-11-2018, 04:26 PM
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#11 | |
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Drives: 2010 2SS RS Join Date: Dec 2016
Location: Juneau Alaska
Posts: 42
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so with trying to compare after market fuel pumps to the stock ss pump one thing I needed to know was what the stock Venturi flows. I could not find the specs online so I came up with my own test.
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03-11-2018, 04:46 PM
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#12 |
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Drives: 2010 2SS RS Join Date: Dec 2016
Location: Juneau Alaska
Posts: 42
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so the stock ss Venturi flows 400ml per minute, and that translates to 24 lph I did this test multiple times with the same results. I also back flushed the jets to make sure the jets were clean.
so know if we take the flow rate of the ss fuel pump module ( 190 lph @ 60psi ) and we add the flow loss of the Venturi ( 24 lph @ 60psi ) we know the stock ss pump motor by its self flows about ( 214 lph @ 60psi ) with that info I can get a better comparison to after market pumps |
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03-11-2018, 04:55 PM
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#13 |
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Drives: 2010 2SS RS Join Date: Dec 2016
Location: Juneau Alaska
Posts: 42
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so for about a $100 you could make something similar to a zl1 pump, but being that zl1 pumps are only $200
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