Converting 1996 PCM to '98+ or 0411?

[KAZ MotorSports]

Hey guys,

I just got the deal of the century (for me anyway) and the only problem is it is a 1996 Vortec Suburban.

I have been trying to search around for anyone who has converted to a 1998 or otherwise and I seem to be batting zero at this point. She will not be hot-rodded...just want the ability to tune her some.

Thanks all!
-Kenny

[ChipsByAl]

The swap to the 98-99 PCM is not that friendly. I would opt for the 0411 PCM in a heartbeat. Use the 02 operating system for the most capability.

[joecar]

And the '02 OS (specifically 12212156) will allow you to jump to COS5 if you so wish.

[Aloicious]

Hey guys,

I just got the deal of the century (for me anyway) and the only problem is it is a 1996 Vortec Suburban.

I have been trying to search around for anyone who has converted to a 1998 or otherwise and I seem to be batting zero at this point. She will not be hot-rodded...just want the ability to tune her some.

Thanks all!
-Kenny

I swapped my '96 vortec truck to the 12200411 PCM, and tune with V1. its not that hard, and the 411 is better than the 98 PCMs. check this thread out:
http://www.pacificp.com/forum/viewtopic.php?t=3240

Edit- you'll want to use the '02 Express van OS file (from holdencrazy) as a base for your tuning as it ran the same L31 setup as our trucks.

[Lextech]

Hey KAZ,

The 96 to 98 PCM swap is very doable, but won't gain you much of anything, except for tuning software options. I think you would be better off and happier with the 12200411 PCM swap. It can be done by a first timer in about 4 hrs. You will instantly notice smoother idle and crisper/smoother throttle response. PM me your E-Mail address if you want a copy of the wiring file to install the 0411 PCM into your 96. I can also send you a tune to get you started.

Jeff

[KAZ MotorSports]

Thank you gentlemen!!!!

Lextech I sent you an email. I also asked you about the wiring for a '98 to 0411. If anyone else here has that it would help me GREATLY on a customers '98 supercharged 383 stroker that is being a pain in my balls!!

Thanks again guys!
-Kenny

[97K15004WD]

Reference Materials:

Main thread is very long, but excellent reading. Known differences and some problems are noted below. Great swap, but just be fully aware.

Everyone who has done this is very happy with the end result....

=================================================

Main Thread:
http://www.pacificp.com/forum/viewtopic.php?t=3240

Known Differences:
http://www.pacificp.com/forum/viewtopic.php?t=7164


4 Low won't shift:
http://www.pacificp.com/forum/viewtopic.php?t=6883

411 Swap begun... 100% COMPLETE
http://www.pacificp.com/forum/viewtopic.php?t=7131

=================================================

[Aloicious]

Reference Materials:

Main thread is very long, but excellent reading. Known differences and some problems are noted below. Great swap, but just be fully aware.

Everyone who has done this is very happy with the end result....

=================================================

Main Thread:
http://www.pacificp.com/forum/viewtopic.php?t=3240

Known Differences:
http://www.pacificp.com/forum/viewtopic.php?t=7164


4 Low won't shift:
http://www.pacificp.com/forum/viewtopic.php?t=6883

411 Swap begun... 100% COMPLETE
http://www.pacificp.com/forum/viewtopic.php?t=7131

=================================================


the 4Lo issue has been fixed http://www.pacificp.com/forum/viewtopic.php?t=7157
Edit - possible issues with COS and 4Lo still, see thread for details.

also, the EGR issue I was talking about in the 100% complete thread has been fixed also, see the main thread for info on it.

[KAZ MotorSports]

Hey Jeff,

I got the files sir! THANK YOU!!

I owe you a beer or 10 if you are ever in the CO Springs area.

This is going to sound like an idiotic question, but after looking through some of the threads and seeing your motors photos...it looks like you are running individual injectors and a ram-jet style intake plenum. Is this required for the 0411 PCM or will the 0411 run the Vortec Spider injection system?

Also thank you to all who responded to my request for information. GREAT READING!

-Kenny

[Lextech]

Hey KAZ,

The 0411 will run the stock poppets just fine!

Jeff

[Aloicious]

Hey KAZ,

The 0411 will run the stock poppets just fine!

Jeff

yup, I ran the 411 with the stock poppets for about 4-5 months before swapping to a MPFI intake. the 411 worked find for both

[KAZ MotorSports]

Thanks guys.

I have a "revised" spider assembly coming the end of this week. I will be doing the assembly, PCM swap, and lower plenum gasket all in one shot.

I appreciate all the info and responses to my question.

I will post up when I am finished.

-Kenny

[KAZ MotorSports]

Having some issues guys. 1998 Vortec 411 PCM conversion. Motor is a 383 stroker with a whipple.

If I leave the Express Van OS without COS3 loaded it runs fine. As soon as I load 02020003 it will not run properly. Will not take throttle input, idles rough (lean), and just plain stalls after a few seconds. If I reflash the PCM with the Express van OS only it runs fine.

Any thoughts?

This is about the 12th COS3 I have loaded into an LS1 based PCM and never had this issue before.

I attached the .cal file. Very basic, but no run with it.

[Lextech]

Try setting P0101,P0102,P0103 to non-emissions. Are you sure you want your B3647 table to look like that?

Jeff

[KAZ MotorSports]

Ok Jeff,

I changed P0101 etc to non-emissions and moved B3647 to 0.98. It runs fine now. Normally I can start and begin setting up everything the way I had it. Why is this one different?

Thank you sir. I was severely banging my head against the wall wondering what the hell the problem was. I really need to get a heavy bag hanging from the wall to relieve my stress from time to time and help clear my head.

Thank much!
-Kenny

[Lextech]

Cool,
After 117 posts, I finally got 1 right.:rockon:

[96silveradoz71]

I got around to the 0411 swap in my 96. Got it running with van tune. Was wondering what pid to use to check the distributor position i cant find cam retard or cmpret in the v8 software.

[joecar]

Look for that pid in the V7 scantool.

[96silveradoz71]

I have 7.5 software i did find it in there but it says its not supported and can only seem to flash or read data through the v8 software sense it made me update my sotware to do anything.