LS3 & L92 Info - Page 20 - LS1TECH



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LS3 & L92 Info

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Old 04-04-2011, 04:42 PM   #381
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I noticed that also
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Old 05-14-2011, 06:33 PM   #382
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Will LS3 heads bolt on to a LQ9 block? Are the rocker arms the same?
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Old 05-14-2011, 06:51 PM   #383
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Will LS3 heads bolt on to a LQ9 block? Are the rocker arms the same?
They bolt up to the block but they use offset intake rockers. The exhaust rockers are the same.
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Old 08-19-2011, 09:04 AM   #384
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what is the 6.0 that comes with L92 heads?
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Old 08-19-2011, 09:27 AM   #385
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what is the 6.0 that comes with L92 heads?
Called L98 in the southern hemisphere.
L76 (has AFM hardware) in Pontiac G8-GT
LY6 in trucks
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Old 10-08-2011, 12:02 AM   #386
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About to buy a truck 6.2l engine and thought it was a L92 at first, found out it's most likely a L94 engine... beside the usual difference with truck engines (+VVT and the AFM stuff) do these also have the good L92 heads castings?
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Old 10-08-2011, 06:49 AM   #387
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I can't answer the head question but the 6.2 pickup truck engines do not have AFM.
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Old 10-08-2011, 07:05 AM   #388
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I can't answer the head question but the 6.2 pickup truck engines do not have AFM.
It's suppose to be out of an escalade 2010, searches says it would be a L94... I got mixed up because the seller said it used the good L92 heads (I just thought it was a L92... reading to fast) so just trying to confirm that's true.
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Old 10-08-2011, 07:18 AM   #389
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The 6.2 engines do have the rectangular port heads if that is what you want to confirm.
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Old 10-08-2011, 07:51 AM   #390
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The 6.2 engines do have the rectangular port heads if that is what you want to confirm.
Pretty much, just everyone talks about the L92 being almost the LS3, but no one really talks about L94 and L99 engines (or refer them as L92 with AFM... cause from some charts I saw L92 never had AFM). Is it just that the engines are very similar to with the addition of DOD/AFM but other than that those are almost LS3 to?
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Old 10-08-2011, 08:17 AM   #391
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Maybe the L92 does have AFM. Not sure on that. Everything that I have read says that the L99 does have both VVT and AFM. I fairly sure that all of the 6.2 engines have rectangular ports.

I was curious so I took a look and the 6.2 in my 11 Silverado is a L9H. It has VVT but no AFM.

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Pretty much, just everyone talks about the L92 being almost the LS3, but no one really talks about L94 and L99 engines (or refer them as L92 with AFM... cause from some charts I saw L92 never had AFM). Is it just that the engines are very similar to with the addition of DOD/AFM but other than that those are almost LS3 to?
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Old 10-11-2011, 08:56 PM   #392
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So apparently my motor wouldn't have Displacement on Demand (might be a 2009 not a 2010) but I have it in front of me now, how can I check this?

The head casting number is "823"... that's the only useful number I could find with a quick look. Also number on the ECU is 12625455 (which is no help... gives 2009-2010 years).

Is there anything that I could look at (an extra plug, something specific) to know if I have DOD or not.
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Old 01-05-2012, 07:57 AM   #393
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Black plug on valley cover back of intake
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Old 01-15-2012, 07:22 PM   #394
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Quote:
Originally Posted by gisqc View Post
So apparently my motor wouldn't have Displacement on Demand (might be a 2009 not a 2010) but I have it in front of me now, how can I check this?

The head casting number is "823"... that's the only useful number I could find with a quick look. Also number on the ECU is 12625455 (which is no help... gives 2009-2010 years).

Is there anything that I could look at (an extra plug, something specific) to know if I have DOD or not.
GISQC The L92 was first put into the escalade in 2007 so even if you have a 09 escalade engine it is still the same. Displacement on Demand is now called Active Fuel Management they changed the way the system worked in 04 so they gave it the new name. You have whats called a Valve Lifter Oil Manifold Assembly located right under the big black plastic manifold. I attached a picture that will give you a idea of the plug that cmacknificent was talking about. Imagine your intake manifold right above this picture. Hope that helps.
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LS3 & L92 Info-afm.gif  
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Old 01-22-2012, 12:08 PM   #395
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Just have a few questions...

1) So, only fully assembled L92 and/or LS3 Heads come with the better "worked" ports versus unassembled heads. I read that somewhere just couldnt remember...
2) I plan to do a mild cam in my LS2, from my understanding, the LS3 Heads comes with better intake valves vs. the L92, but would i need to use the stock intake valves or should i just get aftermarket valves and buy the bare castings? (but then i loose out on the assembled worked ports if it is true). my cam will be spec'd for a DD car. I dont plan on going over 500rwhp but if its for better piece of mind, ill go with whatever. any other components worth upgrading?
3) with the LS3/L76 Intake, do I need to order it assembled or can i use my LS2 rail, injectors, TB?

Last edited by family-man; 01-22-2012 at 12:28 PM.
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Old 05-23-2012, 04:30 PM   #396
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looks like the L92 head part number has been changed to 12629051 from looking around online for the bare head.
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Old 06-19-2012, 07:03 PM   #397
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Quote:
Originally Posted by speeddemongto View Post
looks like the L92 head part number has been changed to 12629051 from looking around online for the bare head.
Is there a specific place, or book I can find all the info that I will need in order to find out what parts will fit on and mix and match with motors ranging from 4.8l-6.0l vortecs with stock parts off of all the modern LS engines???
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Old 08-26-2012, 03:43 PM   #398
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Default What engine is this?

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Originally Posted by gisqc View Post
Pretty much, just everyone talks about the L92.... but no one really talks about L94 and L99 engines (or refer them as L92 with AFM... cause from some charts I saw L92 never had AFM). ..............
I've recently become the not-so-proud owner of a 2008 Escalade L92 engine. Or that's what I was told, no vehicle VIN of course. I got just the basic engine w-heads & intake, but that's all. Got it for cheap because the block is junk, starter was sheared off along with that corner of the block. Ouch, nasty crash I'd think. Balancer looks unscathed though. Crank looks like a .002 runout on the nose, flywheel flange looks perfect. I'll need to investigate that runout further before investing in a block.

Upon disassembly, all looks in good shape, cylinders, not a hint of a ridge, and a little cross-hatch still visible. 6.2 for sure, 5364 heads, and truck style intake. Defintely has AFM though, which surprised me, and of course, VVT.

But made me curious just what the heck was this engine from??? Is it an L94? After searching this site, seems like no #'s on the block will tell me much. Or?? According to any info I can find, AFM didn't start until 2010??
So what the heck is this from?
.

Last edited by Scotty_82; 08-26-2012 at 03:52 PM. Reason: typo
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Old 10-05-2015, 11:26 AM   #399
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Default L92 into 04 rcsb half ton

Good day everyone. I've read all 20 pages of this thread and I must say hats off to all of you. Tons of useful information. I'm wondering if someone has a list of parts they would need to swap an L92 into a 04 4x4 pickup. I currently have the 4.8 and 4l60e all in stock form. I'd like to swap the l92 with a 4l80e other than the reluctor wheel converter from linginfelter and a trans crossmember is there anything else a person might need to accomplish this. Thanks in advance.
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