Dave01GT

I found a decent deal on a LT4 z06 hpfp and now looking for the injectors and fuel rail. Where have you guys found the best price on the injectors and/or the fuel rail? Does anyone have the fuel rail part number? Also for those that have done the LT4 pump already, did you add the LS7 lash cap and have any issues? I saw one member had an issue, but has anyone else? Thanks

C7&7

Pump part number is 12642287... Not sure about the injectors. I don't think many people are doing the injectors actually.

You don't need the lashcap if you're doing a cam or bigger pump. You're getting the fuel.

Higgs Boson

I bought the pump, rails, and injectors all from my local dealer. the rails and injectors aren't expensive.

btw, I added a lash cap to the Z06 pump and pushed it right out of the block, stripped the mounting bolts. don't do it.

C7&7

Higgs you mind posting up the part numbers for the rails and injectors?

Dave01GT

I called my dealer, and they want 78e for the injectors and 115e for the rails. They also said they showed a regular injector and a high flow injector for the z06. The part # I found for the "high flow" injectors was 12668655. The # I found for the rails was Left- 12659649 Right- 1265950 Does this seem right to those that already bought them?

Higgs Boson

rail 12659650

injectors x8 12668655

FYREANT

Listen to higgs. We have both had bad lash cap experiences. "Its a trap!" Lol

C7&7

Thanks Higgs!

C7&7

Agreed!

Dave01GT

Did you swap the rail yourself? When I look up the part number for a base and a z06 I get the same number. Just wanted to see if you noticed a difference in size?

Higgs Boson

The 14 C7 and 15 Z06 have different part numbers so if you have a 15 I guess it is possible they all started running the same rails or the bigger rail might be the replacement rail for everything.. The number I listed also goes on Flex Fuel trucks, which makes sense.

The 15 base and Z06 also share some fuel pump or FPCM settings that are different from the 14, things like voltage output tables. GM definitely made some changes after the 14 run to all of them.

555ctsv

Just to update this thread..

I just went to order High Flow LT4 Injectors for a 2016 Z06 and they said part #12668655 was for a 2015.

I have a 2016 Base, so I'm guessing i would need the 2016 Z06 injectors. The Part # they gave me was #12672374 for High Flow 2016 C7Z injectors. The price was the same so i figured i'd just go with the 2016 version in case there's any changes. I'll update if i have any issues.

black_c7

i just saw that the 15 base and zo6 injectors share the same part number, does it mean they have the same injectors?

555ctsv

Honestly i dont know. If the part # are the same i would think they are the same injector.

I still dont understand why there is a low, nominal, and high flow option for injectors. Maybe the rear cylinders are getting higher flow to offset being leaner than the rest?

I would start a thread to ask that question but i know ill just get 100 responses telling me to search more so... i guess ill search more first

T/A KID

I have a 15 and I upgraded the injectors and HPFP... They are indeed different... Use the high flow for all 8...

the rails are the same 15 Zo6 and stingray...14 had a different rail

yonks8365

I got my z06 hpfp for $700 plus shipping on ebay from user/seller ducks 4x4. I know there were more available when i purchased in August. It was the best deal i found by far. Shipping was fast as well

I found injectors $62ea from gmpartsgiant.com but there are others that sell at same price. Shipping was slow and i paid for 2 day. Took a 7 days i dont recommend them for the injectors.

If anbody is looking.

555ctsv

I got mine from the same seller! Although i got mine for $650 shipped after some online haggling

yonks8365

Thats a steal! I saw $700 and i thought that was a hell of a deal. Most I've seen have been $800-$850.

I think we both made out.

bigsapper

I paid similar for my HPFP & injectors last year.

Still have everything sitting in a box. I intended them for a Procharged 5.3L in my truck running E85, but that's all gone. I kept the pump & injectors thinking I would need them for an E85 conversion on the Vette, but it doesn't look like it's necessary.

Unsure if I want to sell them, tho.

555ctsv

Heck yeah man! It said "make offer" so i think i offered $620 and he came back at $650, so i was excited!! Have you installed yours yet? Im having a cam installed on the 26th and plan to have the shop install the pump and injectors at the same time.