b0b

iTrader: (1)

I have a buddy that wants me to do a cam change in this 6.2 Its out of a 08 denali, alum block, 5364 heads. Ive never fooled with a gen IV so Im out of my element. My main question is that he bought a gen 3 ls1 style 3 bolt cam... My guess is that's not gonna work? If it has the cylinder mgmt. stuff in it what does that mean as far as making this engine into a hot rod. Ive heard that the lifters are different and they would need to be changed? Also, what are the differences in springs? He has the Brian Tooley dual springs, will those work? Heres some pics I have. The engine is eventually goin in a 95 Impala

Bring the Noise

Just a quick guess would say its a L92 (08 Denali 6.2L)

Did it come with the wiring harness and ecm?

Google "AFM deletion kit" and you'll find out that you can go with a LS1/2/6/7 style cam, lifters, and push rods after removing the AFM components that are under the manifold and blocking off the oil feeds for the AFM lifters in the valley.

As for the cam they make 3 bolt to 1 bolt conversions I do believe, then again if you don't have the stock ecm and wiring you may find out you would not need a conversion and instead go with a 3 bolt LS1/2 style cam gear and chain (C5R Chains one of the best single setups and is used by alot of folks that do Gen III and Gen IV builds).

If the motor were retro-ed in with a LS1 style ecm you would need a 58 to 24 crank timing sensor converter, tap the motor for the LS1 style knock sensors. Oh and fit the motor with the LS1 style cam sensor (and make sure the cam you use has the LS1 style sensor).

Bla Bla Bla....

If you've worked with Gen III's then its only slightly different...

Note: I don't post that often and I don't check back but say once a week so I tried to list up what I know... Hopefully others will chime in shortly.

1989GTA

As stated you have an L92 motor with VVT. It came with the single bolt camshaft. You can convert to the 3 bolt style per the above post. If it were me I would keep the VVT as it will broaden your power/torque range. You don't have DOD and can reuse the lifters that came with it.

By the way those camshaft specs look virtually identical to my TSP VVT3 camshaft.

b0b

iTrader: (1)

Good to know. How do you know it doesn't have dod or afm?

1989GTA

For one thing if you pull the intake manifold the valley cover will be pretty much flat. If it had DOD it would have ridges on it for the oil passages. You can always post a picture with the intake manifold off showing the valley cover.

b0b

iTrader: (1)

ok Ill do that. You have any idea on springs? Can you use ls1 style? Or are there differences like OD and what not?

01WS6/tamu

iTrader: (37)

L92.
has VVT and DOD

only L9H 6.2
has VVT and non DOD

1989GTA

Not true. My L92 has VVT and no DOD. Maybe later on they introduced DOD to the L92.

He will take a picture of the valley cover and we will find out if his has DOD or not.

v8pwr

iTrader: (19)

My 07 L92 did not have DOD and I'm using the block in an ls1 app. That engine does not have DOD. The valley cover can be seen in the last pic. A DOD valley cover has a ton of ribs & passage ways and is very easy to id.

1989GTA

"The valley cover can be seen in the last pic."

You are correct. He does not have DOD.

b0b

iTrader: (1)

That's what I was hoping for. What about VVT, how does that affect putting a big cam in it or does it? Also, can the BTR dual springs be used for LS1s?

1989GTA

Doesn't affect anything about a big camshaft within reason. Plenty of people make them up to 235/24x @ .050" nowadays. You can probably find someone who will grind you a larger VVT one if you want. Lots of different valve springs are available. The same basic head is used on the L99, LS3 and LY6.

b0b

iTrader: (1)

So ls1/6 gen 3 springs won't work?

redbird555

iTrader: (14)

yes the springs are the same just be sure to use the correct ls3 retainers, locks and rockers.

b0b

iTrader: (1)

Is it OK to reuse the old stuff with the new springs?

stereojnky

iTrader: (19)

3 Bolt camshaft install kit
http://www.lingenfelter.com/mm5/merc...e#.U4fCmvldWSo
You also heed an LS2 front cover.
http://www.lingenfelter.com/mm5/merc...=#.U4fDcfldWSo
You will not need all of the items in the ls2 cover kit (ie. bolts, cam sensor, or sensor harness) you should be able to reuse yours.

Just a quick post for illustrative purposes.

Don't forget to measure for longer pushrods to compensate for the smaller base circle of that cam.

01WS6/tamu

iTrader: (37)

2010 up L92 have DOD and VVT
2009 back L92 no DOD

L9H ALL VVT no DOD ever

The dead giveaway is the waffle style valley cover with the oil passages if it's slick its a non DOD engine.

GM has too damm many engine variations too keep up with all of them these days you gotta be really careful I forgot about 09 back

OP the motor in your piccture is a VVT non DOD engine.
You need whatever valve springs that cam calls for
Correct pushrods need a length checker to verify proper length
need new front timing cover non VVT engine
need 4x timing gear and 3 cam gear bolts
Your existing oil pump will be fine no need to change it unless you just want to.

b0b

iTrader: (1)

But if we use a single bolt cam it's just a matter or cam springs and pushrods right? I'm trying to get him to return the 3 bolt so all this conversion stuff isn't necessary

S10xGN

iTrader: (11)

With the potential engine swap, you'll need to consider the ECM & harness, do you have that? Keeping the VVT is viable if you have the proper electronics and tuning capability. If you have to scrounge around for all that, it might be easier to skip it...

b0b

iTrader: (1)

Yes he has a new ECM and harness for this swap as he didn't get one with the engine. So with all that considered, can I throw in a single bolt cam and be done with it and use the BTR springs we already have?