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Old 04-16-2018, 02:51 PM   #1
Jhunsberger
 
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HPFP Part Number

Doing a whipple install soon and want to do the pump and injectors at the same time.

Anyone have the LT4 HPFP, LT4 injectors and associated replacement fuel line part numbers?

Any suggestions for the install of these items? I am aware the fuel lines are a 1 time use item, and that I need to properly index the cam to install the HPFP. Anything else worth mentioning?

Thank you!
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Old 04-16-2018, 03:54 PM   #2
Epx998
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Jannetty sold me the following, LT-4 HPFP, LT-4 injectors and ZL1 fuel pump assembly.

You'll need a tune for the fuel upgrades as well.
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Old 04-17-2018, 06:12 AM   #3
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Quote:
Originally Posted by Epx998 View Post
Jannetty sold me the following, LT-4 HPFP, LT-4 injectors and ZL1 fuel pump assembly.

You'll need a tune for the fuel upgrades as well.
Thanks for the input, I will get a tune when I install the fuel components and the whipple together.
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Old 04-17-2018, 11:03 AM   #4
steelheadrob
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Here is the LT4 HPFP part # AC Delco HPM1036 or GM 12679090
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Old 04-17-2018, 01:21 PM   #5
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Quote:
Originally Posted by steelheadrob View Post
Here is the LT4 HPFP part # AC Delco HPM1036 or GM 12679090
Thanks Steelheadrob! I have been following your whipple build. cant wait to start mine!
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Old 05-10-2018, 04:32 AM   #6
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What about delphi hm10027?
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Old 06-06-2018, 08:33 PM   #7
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Does anyone have current part numbers for all the required upgrade parts (HPFP, In tank pump, injectors, fuel feed pipe)?
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Old 06-07-2018, 02:42 AM   #8
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Sure would be nice to get a part number for the LT4 injectors and in tank pump assembly. I notice different part numbers and options. Parts numbers.....not vendors...
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Old 06-07-2018, 06:39 AM   #9
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Quote:
Originally Posted by Inkedmongo View Post
Sure would be nice to get a part number for the LT4 injectors and in tank pump assembly. I notice different part numbers and options. Parts numbers.....not vendors...
Here is the part number from the lid of my LT4 injectors box.
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Old 06-07-2018, 07:44 AM   #10
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Is there an upgrade out there from the stock HPFP that is good?
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Old 06-07-2018, 08:29 AM   #11
Jhunsberger
 
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Originally Posted by cheeze9878 View Post
Is there an upgrade out there from the stock HPFP that is good?
There was not any part numbers on the 2 that I got. unfortunately the first one I got the connector for the solenoid was broken, so I had to exchange it. My stuff came from Pace Performance. This is the part number they list for the LT4 HPFP: 12688607.
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Old 06-07-2018, 08:58 AM   #12
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Quote:
Originally Posted by Jhunsberger View Post
There was not any part numbers on the 2 that I got. unfortunately the first one I got the connector for the solenoid was broken, so I had to exchange it. My stuff came from Pace Performance. This is the part number they list for the LT4 HPFP: 12688607.

I'm sorry I didn't say it correctly, I'm looking for an upgrade to the GM HPFP not just a GM LT4 HPFP.
I can't seem to find anything better then a ZL1 fuel pump. My googleing is not getting me what I'm looking for.
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Old 06-07-2018, 12:21 PM   #13
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AC Delco part# is HPM1036 - use this as it's the same part but usually priced cheaper

Buy from RockAuto with a coupon code for deals

Seems like lots of vendors want $130-1500 for a LT4 HPFP and Injectors - I got mine from RockAuto with the coupon code for like $1070 shipped.

I think they've raised prices since, but you get the idea.
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Old 06-07-2018, 01:02 PM   #14
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Quote:
Originally Posted by cheeze9878 View Post
I'm sorry I didn't say it correctly, I'm looking for an upgrade to the GM HPFP not just a GM LT4 HPFP.
I can't seem to find anything better then a ZL1 fuel pump. My googleing is not getting me what I'm looking for.
Lingenfelter do a big bore pump which i believe is an upgrade to the LT4 HPFP
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