[FHRITP]

Alright guys, Is anyone familiar with the NNBS DOD/AFM delete? Im getting a Lifter chirp from what sounds like the passenger side bank. Im going to do a LS7 lifter swap mild cam and DOD delete. Does anyone recommend a kit or does anyone know what factory cam specs on these trucks?

Has anyone else heard this chirp? It sounds like a belt noise but only with RPM. Removed both belts and noise is still there.

I got rid of my TBSS to avoid problems, Guess this is what i get.

 

[Csanders1992]

Go to Texas speeds website. They have everything you need on there. And if your doing a cam it would be a waste to do a stock one. Just do a mild cam


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[2005_Silverado]

if you do want a stock 5.3 cam, Ive got a 3 bolt style out of my engine. $10 plus shipping.

Chirping could be a bad roller on a lifter. Only way to tell really is by pulling the heads and inspecting. Ive seen lots of Gen IV motors with bad lifter rollers...they either turn inside the lifter tray or they don't get enough oil and scar the cam lobes and start to jam up...hence the chirping.

 

[statonburrell]

my nnbs was doing same thing

 

[FHRITP]

I know its a rolled lifter. Does anyone know factory cam specs? Im trying to find a mild cam to put into the truck and I'm trying to keep reliability up and fuel consumption down. This is my DD and my family wagon and I dont want excessive lope or anything crazy.

 

[2005_Silverado]

I'll find it for you in a second, it's the same as what's in mine.

*EDIT: Found it, 196/201°, .488" (non-AFM intake valves) and .491" (AFM intake valves), .488" (non-AFM exhaust valves) and .491" (AFM exhaust valves). Not 100% sure of the LSA, but I'd bet 122.5° or something very close.

you probably have LY5

 

[FHRITP]

Is there anyway to find out if i have lq9 lq4 ly5? whatever it might

 

[2005_Silverado]

look at the RPO codes in ur glove box.... NNBS 5.3 = LY5, 6.0 = LY6...NNBS didn't get LQ4/9

 

[FHRITP]

LH6 Aluminum Block

 

[2005_Silverado]

nice...that's pretty much an LY5 but all aluminum

 

[Csanders1992]

Nnbs also has l76 in the vortex max


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[FHRITP]

So after speaking with Texas Speed this morning, it appears to be about $1,200 in parts to eliminate the DOD. That price does not include tune, headers, machine shop labor for cylinder heads, or labor. Going with a mild cam on this build, this is my DD Family hauler and still need to get decent fuel economy and smooth idle.

I can post the entire parts list if anyone is interested?

 

[sierra_Beast]

I would love to know the parts list. I'm wanting to do this myself.

 

[Bumpers]

Brian tooley racing had the best price on the complete dod delete last I looked then you just need a cam springs pushrods


My 5.3 has a bad lifter in it at the moment as well.. sounds like a turkey call under the hood

 

[TPoore]

I want to do this. Isnt the DOD delete kit like $400, Cam is around $400, and springs and such? I remember looking into this as well but never completed because for the cam I wanted to go to I needed a new torque converter, and the cost of install for both was astronomical.

 

[FHRITP]

DOD delete was 1200 with all parts.

LS2 Valley Cover
LS7 Lifters
New lifter buckets
LS2 timing chain set and tensioners
GM LS9? Headgaskets
GM Headbolts
Your choice of cam
Your choice of valve springs
Hardened Pushrods

 

[spitfire2332]

just curious how many miles are on your truck?

when do these trucks start to see the lifter issues?

 

[FHRITP]

Mine had 75,000 when I tore it down. 2007 are the worst years to have. First motor design of the NNBS with the DOD bullshit...

 

[05ZHOE]

I guess I've gotten lucky with mine....mine is a 2011 and I got it with 50k on it in 2013 and I'm at 121k now. I've just ran Mobil 1 and AC delco filter since day one and I just have a custom tune done with the AFM turned off, 93 octane, and the timing bumped up a little. I run the absolute piss out of my truck and it just takes it and keeps on going. Has never even had the slightest tick, chirp, no oil leaks, or any piston slap even on cold mornings. I guess some are just built better or I just got lucky. I know several guys who have had lifter issues in their NNBS. Anyone know why some have the issues and some are fine forever?


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[Graystone]

They made a couple internal changes in 2008 that helped