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82 Vette ECM substitute

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Old 07-17-2017, 03:19 PM   #1
htown81vette
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Default 82 Vette ECM substitute

I was reading a SuperChevy article where they were able to replace the 82 ECM with a '90 Camaro ECM, so that it could be tune-able.

I also have a friend who has a '91 ECM, says it's out of a Camaro, and is willing to give it me free.

Attached pic is the S/N of the '91 ECM. Will this work or not as a substitute?

I thought it was worth asking....


Last edited by htown81vette; 07-17-2017 at 03:20 PM.
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Old 07-17-2017, 03:29 PM   #2
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Anything can be done question is how willing are you to mod your car and how far are you willing to go?
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Old 07-17-2017, 03:53 PM   #3
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Originally Posted by Kacyc3 View Post
Anything can be done question is how willing are you to mod your car and how far are you willing to go?
Good question, I want to keep this one fairly mild, looking at 350 to 380 hp tops. Maybe a cam change MAYBE heads but doubt it. This one is kinda a budget build. But I already have the tuning software and experience (tuning my 98 Firebird), but hptuners says it will tune all the way back to 1990.

i am willing to splice and dice on the harness too. It has a 290 hp crate motor in it already so I don't think many changes will have much of an impact on value anyways...

Last edited by htown81vette; 07-17-2017 at 03:58 PM.
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Old 07-17-2017, 04:06 PM   #4
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That's a TPI PCM. You need a TBI PCM. Basically, you have a split TBI on that engine -
each bore and injector is in a separate throttle body vs 2 in one throttle body.

The simplest one to work with comes from the 88-91 trucks. 1227747 is the service number. This one will pretty much wire right in.

A possible candidate for a more advanced one would be the 94-95 truck one with service number 16197427.

The one the article talked about was probably from a TBI F-body car, service number 1228746. Very similar to the 1227747 with the main difference being an IAT sensor.

HP Tuners will not handle anything pre-OBDII. But, there is a cheap (by donation) program called TunerPro that will allow you to tune it. Heck, you can even use an emulator and tune it real-time with the engine running.

Last edited by lionelhutz; 07-17-2017 at 04:07 PM.
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Old 07-17-2017, 04:08 PM   #5
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If your car is a 1982 and is still equipped with the crossfire injection system, you need to know that the major limiting factor in making additional power is the intake manifold.

Then again there is this...


http://www.eddiemotorsports.com/prod...old-msren-100/

Good luck... GUSTO
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Old 07-17-2017, 05:01 PM   #6
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Good info from Lionel.

I've got the 1227747 ECM under a layer of dust on the shelf waiting for time to wire it up to my '84.
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Old 07-17-2017, 05:07 PM   #7
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Originally Posted by GUSTO14 View Post
If your car is a 1982 and is still equipped with the crossfire injection system, you need to know that the major limiting factor in making additional power is the intake manifold.

Then again there is this...


http://www.eddiemotorsports.com/prod...old-msren-100/

Good luck... GUSTO
Got one of those. Haven't installed it yet.
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Old 07-17-2017, 05:33 PM   #8
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Quote:
Originally Posted by lionelhutz View Post
That's a TPI PCM. You need a TBI PCM. Basically, you have a split TBI on that engine -
each bore and injector is in a separate throttle body vs 2 in one throttle body.

The simplest one to work with comes from the 88-91 trucks. 1227747 is the service number. This one will pretty much wire right in.

A possible candidate for a more advanced one would be the 94-95 truck one with service number 16197427.

The one the article talked about was probably from a TBI F-body car, service number 1228746. Very similar to the 1227747 with the main difference being an IAT sensor.

HP Tuners will not handle anything pre-OBDII. But, there is a cheap (by donation) program called TunerPro that will allow you to tune it. Heck, you can even use an emulator and tune it real-time with the engine running.
This is pretty much what they say too in the superchevy article...thanks....

http://www.superchevy.com/how-to/51218/


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Old 07-17-2017, 08:37 PM   #9
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Quote:
Originally Posted by htown81vette View Post
This is pretty much what they say too in the superchevy article...thanks....

http://www.superchevy.com/how-to/51218/


Honestly, I would use a 1227747, HAM board, Ostrich and EBL and call it a day. That way you don't have to spice/hack the harness, just plug it in. Send your ECM to http://www.dynamicefi.com/ and they will do the entire install of components for you.

I have HAM boards available if you want one. Good luck with your mods and thank you for the Renegade support.
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Old 07-17-2017, 10:54 PM   #10
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Why an Ostrich with the EBL mod? The EBL converts it to a flash ECM.
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Old 07-17-2017, 10:56 PM   #11
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Quote:
Originally Posted by Buccaneer View Post
Honestly, I would use a 1227747, HAM board, Ostrich and EBL and call it a day. That way you don't have to spice/hack the harness, just plug it in. Send your ECM to http://www.dynamicefi.com/ and they will do the entire install of components for you.

I have HAM boards available if you want one. Good luck with your mods and thank you for the Renegade support.
I'll have to check out the link you posted. I bought some double sided blank circuit boards and etching fluid/materials a few years back as I was going to make a short (6") adapter harness to use between my '84 harness and the 1227747 ECM. I hate to contract out my hobby work, but this particular project has been on the back burner longer than I had planned.

Thanks for the info.
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Old 07-18-2017, 12:34 AM   #12
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Quote:
Originally Posted by lionelhutz View Post
Why an Ostrich with the EBL mod? The EBL converts it to a flash ECM.
Not sure if I'm following what you are saying? It's the EBL Flash now, I have the older version EBL Classic which isn't made anymore. The new one EBL Flash is supposed to be better, but I've seen it have an odd issue now and then whith Jim's 84 that he when he upgraded to the EBL Flash.

The Ostrich is the Emulator and I can do Real Time (R/T) via TunerPro R/T on the fly and I also have the first version vs. Ostrich 2.0 which is the newest and much smaller unit. However, doing an on-the-fly ECM update... The motor usually doesn't like it while updating and will burble the motor for a few seconds. I do dyno tuning anyway, so on-the-fly isn't done anymore anyway.

You are correct about the 1228746 ECM, it has the IAT capability, but if you are not running an IAT or plan to, it's no better than the 7747. I run a 7747 currently, but had a 8746, but it died on me.

Last edited by Buccaneer; 07-18-2017 at 12:36 AM.
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Old 07-18-2017, 12:57 PM   #13
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Quote:
The simplest one to work with comes from the 88-91 trucks. 1227747 is the service number.
I have one in my 87, they are very primitive. I have soldered in a ZIF socket to allow use of the newer chips that work better are are cheaper. With this method you only need the $80 cable from moats 1 socket and 2 $5 chips to tune with tuner pro, but it uses a 160 baud rate and is very slow for data logging and fine tuning. Going with the new style (not sure of the number)from the newer trucks gets the much faster baud rate, included 3 wire o2 set up and allows for use of 4l6/80E transmissions.

Quote:
Good question, I want to keep this one fairly mild, looking at 350 to 380 hp tops. Maybe a cam change MAYBE heads but doubt it. This one is kinda a budget build. But I already have the tuning software and experience (tuning my 98 Firebird), but hptuners says it will tune all the way back to 1990.

i am willing to splice and dice on the harness too. It has a 290 hp crate motor in it already so I don't think many changes will have much of an impact on value anyways...
Actually I was referring to the car itself, if it were me I would remove the facotry ecm and harness and do either the above ecm, or if you have built the engine yet go grab a vortec short or long block, and harness. You can then repin this harness to work with the 0411 ecm from the ls trucks using the 01 express 5.7 bin and your hp tuners. I just repined the harness for my 99 454 vortec to do this same thing for this reason.
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Old 07-18-2017, 02:32 PM   #14
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Quote:
Originally Posted by Buccaneer View Post
Not sure if I'm following what you are saying?
EBL Flash installs a new board which comes with a cable and flash memory. By the pictures, the flash is soldered right to this board. So, the Ostrich won't work with it. You'd use the Ostrich instead of doing the EBL mod.
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