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Camaro V6 LFX Engine, Exhaust, and Bolt-Ons For all LFX related parts

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Old 06-03-2013, 02:59 PM   #1
m79z28
 
Drives: 1979 Z28 w/LFX
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LFX Fuel Pump Help-Mod

Putting a 2012 LFX into my '79 Z28. Yes, you read right and, no, I could care less if you feel its sacrilege

Since it is the LFX, it seems more difficult to find aftermarket parts. I'm currently hung up on finding an external fuel pump. The dealer here won't offer any info on what is stock (I'm guessing stock is internal) or any other details. I'm finding nothing on a google search and local performance houses don't seem to have much info either.

I have the stock fuel pump ecm. From what I understand, I will be running just a single fuel rail.

Any help is greatly appreciated!
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Old 06-03-2013, 03:07 PM   #2
GretchenGotGrowl


 
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You have two fuel pumps. There is the lift pump that is in the gas tank and the high pressure pump that runs off one of your cams. The high pressure pump feeds two fuel rails, one for each bank.

If you bought a take-out salvage motor then you should have the fuel rails and high pressure pump. You can get the in tank pump from a GM dealer. Just ask them for an in-tank pump for a 2012+ LFX engine.
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Old 06-03-2013, 03:10 PM   #3
m79z28
 
Drives: 1979 Z28 w/LFX
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Quote:
Originally Posted by GretchenGotGrowl View Post
You have two fuel pumps. There is the lift pump that is in the gas tank and the high pressure pump that runs off one of your cams. The high pressure pump feeds two fuel rails, one for each bank.

If you bought a take-out salvage motor then you should have the fuel rails and high pressure pump. You can get the in tank pump from a GM dealer. Just ask them for an in-tank pump for a 2012+ LFX engine.
I'm fairly sure the cam pump is in tact, it is the tank pump I'm trying to figure out.

I'm putting it in my 1979 Z28 so the in-tank pump won't work with the configuration. Looking for any technical specs or leads to find an external pump that will work.
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Old 06-03-2013, 03:13 PM   #4
GretchenGotGrowl


 
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Quote:
Originally Posted by m79z28 View Post
I'm fairly sure the cam pump is in tact, it is the tank pump I'm trying to figure out.

I'm putting it in my 1979 Z28 so the in-tank pump won't work with the configuration. Looking for any technical specs or leads to find an external pump that will work.
Hit up Rhino79 with a PM and I'm sure he can give you the gal/hr and pressure specs.
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EFR Twin Turbo LFX-GPI Tune-ZL1 fuel pump-10:1 CR forged pistons-3.45 gear-Meth Injection-BMR Trailing Arms, Bushings & Sway Bars-CircleD 4000 Stall-GPI Fuel Enrichment System
647 RWHP & 726 RWTQ @18.5 psi on 93 Octane (locked converter)
1/8 mile -- 7.158 @ 102.10 (20psi); old build
Build Thread
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Old 06-08-2013, 07:40 AM   #5
Rhino79



 
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The LFX pump is the same as the SS pump. For the LFX you could use any pump really that was around 255 lph ( wouldn't really need that much but would give room to grow with more power). Then you could use the c5 corvette fuel filter/regulator assy.
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Old 06-10-2013, 11:10 PM   #6
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That project honestly sounds bad ass. Let us know how it ends up for sure!!
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