Cadillac Escalade 6.2 L92 motor in a

BIGCOWL-IMP

BIGCOWL-IMP

Club Member
Hey guys what would it take to get this motor in a 03 2wd silverado with the 4.8 motor ??
Would any of my acessories and etc etc work on it ?? What about the trans ? Would it be more of a hassle then its worth ?
 
shouldn't take much, the 6.2 is the same family as the 4.8, so the acessories should swap over, mounts should bolt up, trans should, etc.


kind of like bolting a 350 in place of a 305

do you have the complete harness, computer, all sensors on the 6.2? that should make it even easier
 
I'm pretty sure you'll have to pull the crank and change the reluctor wheel to run it with the factory ECM, then you could get it flashed and prolly be OK. I think that motor also has variable cam timing, so you could either get rid of it or lock it out somehow. Also, you'd have to get some kind of L92 intake or something and convert to a TB like the one on your truck, the factory one on the 6.2 is electronic. Plus now that I think about it, you might need headers because of the differences in the l92 heads?
 
Fryguy302 said:
I'm pretty sure you'll have to pull the crank and change the reluctor wheel to run it with the factory ECM, then you could get it flashed and prolly be OK. I think that motor also has variable cam timing, so you could either get rid of it or lock it out somehow. Also, you'd have to get some kind of L92 intake or something and convert to a TB like the one on your truck, the factory one on the 6.2 is electronic. Plus now that I think about it, you might need headers because of the differences in the l92 heads?
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Yep, this covers most of it. I beleive I know everything you would need to change, I will list is below. Including what has already been stated...

Change reluctor from 58x to earlier 24x

put in aftermarket cam that uses 3-bolt attatchment instead of 1-bolt

must use early LS2 covers/chain/cam sensor extension harness/and knock sensor harness

Cadillac Escalade L92 manifold, fuel rais, injectors. You may be able to bolt your TB to it IIRC the electronic, and mechanical TB is the same bolt pattern on the trucks.

You would need to take the DOD pieces off, and install regular LS2/LS7 lifters.

your exh manifolds would bolt up, however, it may choke it down a little.

Get it tuned, and run it :bigthumb:
 
Send the wiring harness's to someone like Howell-efi and have them rework you factory harness for the 6.2 computer and the DOD wiring. All the exterior accessories will bolt right on. Then plop the 6.2 into the truck plug the 6.2 ECM into you modified harness and off you go. No need to take anything apart.

As for the drive by wire go grab a pedal and the wiring stub from the Junkyard. There is no axuilary throttle control on the new 6.2 pcms its all in the ECM. Howell can add the circuts to your existing harness.

The only install wiring that may need to be done would be to bring the pedal ETC wiring to the ECM but if you knew the length again the Howell could easily accomodate that.

Nothing really very difficult here. Even taking out the engine harness is not a huge job.
 
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I don't think he has any of that stuff (just going by the for sale ad).


Sean said:
Send the wiring harness's to someone like Howell-efi and have them rework you factory harness for the 6.2 computer and the DOD wiring. All the exterior accessories will bolt right on. Then plop the 6.2 into the truck plug the 6.2 ECM into you modified harness and off you go. No need to take anything apart.

As for the drive by wire go grab a pedal and the wiring stub from the Junkyard. There is no axuilary throttle control on the new 6.2 pcms its all in the ECM. Howell can add the circuts to your existing harness.

The only install wiring that may need to be done would be to bring the pedal ETC wiring to the ECM but if you knew the length again the Howell could easily accomodate that.

Nothing really very difficult here. Even taking out the engine harness is not a huge job.
Click to expand...
 
Howell can rework the 4.8 harness for a 6.2.Even if he doesn't have a harness thats not an issue for them. They have ECMs so on that end its a no brainer. In reality nothing about this swap is remotely difficult if you know where the proper resources are to get the things you need.

Sean


Fryguy302 said:
I don't think he has any of that stuff (just going by the for sale ad).
Click to expand...
 
The only issue I see with the whole swap is the instrument cluster. The newer trucks are going CAN BUs and the older trucks are class 2 serial. However seems like a good exscuse to me to do an autometer dash setup.
 
What are the major advantages of doing this engine swap over just building a LS1/5.3/6.0? (Assuming you're leaving the L92 stock)

Would the conversion to CAN bus also cause any issues with the BCM and radio and such?
 
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Potentially yes. If you tore the motor down and changed the crank and cam reluctors the old wiring harness could work.




Birdie2000 said:
What are the major advantages of doing this engine swap over just building a LS1/5.3/6.0? (Assuming you're leaving the L92 stock)

Would the conversion to CAN bus also cause any issues with the BCM and radio and such?
Click to expand...
 
Ok guys thank you for the info sounds pricey and lots of work.
On the other hand whats all involved in putting a carburator on it? I would love to stick this motor in my mustang. I already have the aje k-member for sbc and if you switch the motor mounts from left to right side then i could put a lsx motor in. To bad i just freshened up my lt4 motor and installed it about 2 weeks ago.
 
Thats massively exspensive. Way cheaper to leave it EFI and run the l92 car intake for hood clearance.


BIGCOWL-IMP said:
Ok guys thank you for the info sounds pricey and lots of work.
On the other hand whats all involved in putting a carburator on it? I would love to stick this motor in my mustang. I already have the aje k-member for sbc and if you switch the motor mounts from left to right side then i could put a lsx motor in. To bad i just freshened up my lt4 motor and installed it about 2 weeks ago.
Click to expand...
 
Sean said:
Howell can rework the 4.8 harness for a 6.2.Even if he doesn't have a harness thats not an issue for them. They have ECMs so on that end its a no brainer. In reality nothing about this swap is remotely difficult if you know where the proper resources are to get the things you need.

Sean
Click to expand...

I'll call them on Monday and post up. I hope you're right, I have a similar project in mind that I've been slowly collecting parts for.
 
Sean said:
Send the wiring harness's to someone like Howell-efi and have them rework you factory harness for the 6.2 computer and the DOD wiring. All the exterior accessories will bolt right on. Then plop the 6.2 into the truck plug the 6.2 ECM into you modified harness and off you go. No need to take anything apart
Click to expand...


Not that easy. The controller for that motor has no capability to talk to the BCM, and you'd need a trans controller as well. There is no factory controller out there that can do everything to make this a seamless swap. Either software is not there, or I/O is not there, or both. BTW, the 6.2L never had DOD turned on anyway, so that software is disabled anyway.

Sean said:
The only install wiring that may need to be done would be to bring the pedal ETC wiring to the ECM but if you knew the length again the Howell could easily accomodate that.

Nothing really very difficult here. Even taking out the engine harness is not a huge job.
Click to expand...

Off the top of my head, the easiest path is to modify the existing harness, put in an LS2 cam or other 3-bolt cam with the 2x front sprocket, and of course do the 58-24x mod.
Harness mods, again off the top of my head:
1) Do the motor mount boss knock sensor mod, which puts the older GenIII knock sensors on the side of the block instead of the valley.
2) Buy adapter pigtails to go to the new injectors.
3) Move the cam sensor wiring from the back of the engine to the front.
4) Change the crank sensor, just reuse the 4.8 sensor from the truck.
5) The TB can be adapted to the new intake with an adapter plate, but if you have ETC, you can use the new TB and bypass the TAC module on the firewall. The TAC module is built into the new TB. There are adapter harnesses out there. I have not personally done this, but I have seen it done.

The lifters in there are fine if you keep the stock cam and limit speed to 6200 RPM. Nothing will deactivate without telling the lifter oil solenoids to do so. If you are keeping the stock cam, the motor is fine with those lifters.


Now, if you carb it and slap it into the Stang,

1-single plane intake and ignition kit from Holley/GMPP. IIRC, there are 24x and 58x kits out there.
2 - 750 CFM carb.
3 put in a non VVT sprocket and chain. that will put the L92 cam straight up with no advance.
4) if you want to make more power and go higher on RPM, take the $ you would have spent on EFI mods, and buy a nice cam, springs and change out 8 lifters. While you are at it, put in the LS2/3 valley cover for better PCV. The pistons have valve reliefs so you can go a lot bigger/longer on the cam than with an LS2 or LS3 with these heads.

you are running. You will give up 25-30 ft-# torque with the single plane, but it will run <real> nice otherwise. Too bad you put that LT4 in there already though..

Now, you'll need to do oilpans (Camaro pan is still in production so it's under $200 from GMpartsdirect.com) and headers, but an accessory drive should be easy to come up with if all you need is a water pump and generator.
 
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