OverkillGTP

iTrader: (2)

Hey guys. Need some help. I've had a 6.2 conversion done in my 06 TBSS.

The front cam gear needed to be swapped to a 1x for my E40 computer (and we did a 24x crank reluctor swap too). I supplied my engine shop with an LS2/3 front cover which they elected not to use, stating that the L92 oil pump was "too big" and the cover wouldn't fit. They reused the VVT L92 cover instead and now I have a P0340 cam sensor code which I've searched and read is because of the air gap between the sensor and the cam gear.

Ive done some research, and any of the 5.3/6.0/6.2 with either AFM or VVT, or both, use the 12612289 pump. The 5.3s and G8 L76 have AFM but not VVT, and they use the 12600325/6 non-VVT front cover, and everything fits fine.

Truck is being towed back to them today to get this sorted out and I need to get them the "right parts".

Can anyone confirm that there's a GM oil pump that the LS2 front cover wouldn't fit over?
Or concur with my hypothesis that the shop was unnecessarily trying to fit the LS2 cover back over the cam phaser, and that's why it "didn't fit"?

Here's a pic of the actual engine with oil pump if it helps:

OverkillGTP

iTrader: (2)

Does that pump look abnormally big to anyone or just normal? ^^^^

litle88

iTrader: (20)

Do your self a favor a d get a melling 10296 and get rid of that tensioner because it will break just do a search. Second don't forget to use some loctite on the cam sprocket bolts and cam retainer plate. Just FYI.

Tainted

iTrader: (9)

yea those spring loaded tensioners are a disaster waiting to happen. the ls2 style is tried and true, and its not gonna come apart either.

TurboMonte100

iTrader: (1)

That oil pump is designed for extra volume to operate the DOD system, I would replace it with a standard oil pump (assuming you deleted the dod).

When I deleted my dod, I ordered a new LS2 front cover because I was told the sensor spacing was different. I compared the new one to the original, and on mine the spacing was the same.

OverkillGTP

iTrader: (2)

My imagination or did this shop use both the LS2 tensioner that I gave them plus the original LS3 together?

TurboMonte100

iTrader: (1)

Here is what it should look like.

litle88

iTrader: (20)

And this lol



Here's how thick the Mellings are

OverkillGTP

iTrader: (2)

Confirmed that the oil pump that's on there is huge, I have no idea where it's from, definitely needs the VVT cover to fit over it.

Problem is, to change it and use the non-VVT cover, I need to pull the motor to get at the oil pump pickup bolts. Started a new thread for that, any input appreciated https://ls1tech.com/forums/generatio...-question.html

And yes we're changing the chain tensioner.

Gray86hatch

iTrader: (83)

That dosn't look like the pump that came on my dads 6.0 with vvt and dod.

I have not had a problem with the ls3 tensioners. If you are breaking them it is because you have harmoics. If you run a good balancer you should not have issues.

Tim

OverkillGTP

iTrader: (2)

If the pump comes out, I'll check for numbers on the back to identify, cause I haven't been able to find out what it could be. Its being replaced with 12612289 which is the AFM/VVT (either or both) high volume pump, and it's noticeabley smaller than the current pump.

BlackSS/SC

I'm using the ls2 timing cover with the stock l92 oil pump without an issue. I have deleted the vvt and the engine never had afm. That pump looks the same as mine.