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Which afm delete kit?

Payton34

By Payton34
in Engines & Drivetrain

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Payton34 Enthusiast

Payton34

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So my lifters on cylinder 7 are going bad and I am looking into doing a Afm delete kit. I have had my Afm turned off with my Diablo tuner since 8k miles and I am at 55k miles now.  I am ticked the lifters are going already. I have looked at Texas speed, Brain Tooley Racing and Scoggin Dickey.  I just want the Afm deleted and no performance cam upgrade.  Just want it reliable. I’m confused what lifters to use. Each kit has multiple options.  I would go with a stock non Afm cam.  I also don’t understand why Scoggin Dickey recommends replacing the high pressure fuel lines. Also can I use my diablointune to tune the Afm off with the kit installed or does ecu need to be sent out?   Would I still have variable valve timing after the afm delete kit?  

Edited by Payton34
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CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Standard lifters are all you need, people call them the LS7 style lifter or whatever. You don't need the super expensive lifters, just regular OEM lifters.

 

Texas speed has it in their listing that it can come with a non AFM 5.3 cam with VVT, so that stays the same. I just don't see new lifter trays listed, so you'd need to add that as well because you are removing the DoD Lifters.

 

I had a total price of $600 before the lifter trays and any other gaskets you need. The two fuel lines are technically one time use, that is why they want you to replace them.

 

You must actually tune the computer if remove all the physical parts. If your handheld tuner just came with pre-loaded tunes that won't be good enough. We have to go into the calibration and turn off the master enable/disable table as well as all the AFM/DoD related trouble codes so it can run without the parts.

 

Also if you pull the fuel injectors out of the cylinder head, you must replace the injector seals on the direct injectors. It requires a tool for installing the new seals as well.

shakenfake Senior Enthusiast

shakenfake

Posted
Posted

LS7 lifters are all Delphi now. GM actually released a new part number for performance lifters, I do not remember what it is and I have yet to see any reveiews

Payton34 Enthusiast

Payton34

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Thanks all....  I talked to Texas speed and he recommended the Delphi LS7 lifters for just a stock engine.  They also said the High Pressure fuel lines don't need to be replaced but I will ask the shop that is going to do the work.  Texas speed also said he has heard of people being able to just use the Diablo Intune for the ECU turning off AFM but wasn't sure.  I called Diablo they said it will turn off all the AFM parameters for the new cam and lifters so hopefully it works.  The nearest place to tune it is 1 1/2 hrs away if I need to go there.  Between the Texas Speed cam spec and BTR cam specs they are slightly different so I am nervous which would be closest to make it run like stock.  Does anyone know members on here that have done a Dod delete from Texas Speed or Brian Tooley?

BTR cam

Specs: 200/206 .549"/.522" 116.5+4.5

Texas Speed cam 

- TSP OEM-Style Non-DOD L86 Camshaft w/ VVT: 200/208 .541"/.529" 116.5+2.5 (25-tspL86stockcam)

 

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

There is basically zero difference between those two camshafts, it would run exactly the same.

Payton34 Enthusiast

Payton34

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2 hours ago, CamGTP said:

There is basically zero difference between those two camshafts, it would run exactly the same.

Thanks

Payton34 Enthusiast

Payton34

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So I tried changing plugs and wires before I jumped into full dod delete and drove around floored it up to redline through gears and no misfire or check engine light.  Could my misfire code really just have been bad plug or wire.  Whole time changing them I really wasn’t too confident. Cyl 7 plug was a little black and greasy oily looking. 

Payton34 Enthusiast

Payton34

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O well 4 days after new plugs and wires misfire cyl 7 is back but odly it didn’t bog down and the check engine light went off after a minute of flashing. 

  • 1 month later...
Payton34 Enthusiast

Payton34

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Posted

Ended up just having lifters and vlom replaced.  The extra labor for the cam swap to do a full delete wasnt worth it since I want to sell the truck within the next year.

kojimep Enthusiast

kojimep

Posted
Posted
On 7/14/2022 at 8:09 AM, Payton34 said:

Ended up just having lifters and vlom replaced.  The extra labor for the cam swap to do a full delete wasnt worth it since I want to sell the truck within the next year.

 

This is where I'm at as well.  Just trying to get the lifter replaced for a decent cost, then I'll trade it on a 250/2500 and never have to worry about these stupid lifters again.

  • 6 months later...
Payton34 Enthusiast

Payton34

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On 2/14/2023 at 10:57 AM, tig488 said:

why did you have the VLOM replaced if you just did the lifter? is that recommended?

Yes it’s part of the procedure GM says needs to be done when lifter fails and is being replaced because it throws the solenoid timing out of spec 

tig488 Enthusiast

tig488

Posted
Posted

Hmm that’s strange.   One of my lifters just failed.  I’m going with a delete kit and having the oil pump replaced while they are there.   

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