LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

anyone identify this LT1 PCM?? strange mods done to this one...

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Old Oct 24, 2007 | 11:04 PM
  #1  
busta9876's Avatar
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From: West Plains, MO
anyone identify this LT1 PCM?? strange mods done to this one...

I got this pcm on trade for some harness work...some interesting modifications done to it. Check out the pics for the place where the usual knock module is..also two notches out of the aluminum case, where 2 ribbon cable connectors are. They are same size as a computer's hard drive IDE cable.

Picture of label says:

DELCO ELECTRONICS CORPORATION
SUBSIDIARY OF GM HUGHES ELECTRONICS
1994 PCM-66U PROTO
W/LT1 Y-CAR ESC CALS

SERIAL *****
DK120041
ORT-MOTOROLA ODM
TTO, DLCP

OTHER-NEW ESC CALS
DERIVED FROM DK11627











Old Oct 24, 2007 | 11:34 PM
  #2  
moroso99's Avatar
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haha, wow. i aint got any idea
Old Oct 25, 2007 | 01:33 AM
  #3  
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From: Engineerland
Hmm looks like maybe a 93 style computer thats set up for some sort of prom emulation. Like maybe a moates ostrich setup, thats the best guess I got.
Old Oct 25, 2007 | 01:50 AM
  #4  
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looks like its for a vette

other than that, i have no m-f-in clue...

maybe an ebay mod haha
Old Oct 25, 2007 | 02:05 AM
  #5  
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sbs
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Originally Posted by busta9876
I got this pcm on trade for some harness work...some interesting modifications done to it. Check out the pics for the place where the usual knock module is..also two notches out of the aluminum case, where 2 ribbon cable connectors are. They are same size as a computer's hard drive IDE cable.

Picture of label says:

DELCO ELECTRONICS CORPORATION
SUBSIDIARY OF GM HUGHES ELECTRONICS
1994 PCM-66U PROTO
W/LT1 Y-CAR ESC CALS

SERIAL *****
DK120041
ORT-MOTOROLA ODM
TTO, DLCP

OTHER-NEW ESC CALS
DERIVED FROM DK11627
Perhaps a GM development PCM. There is a member over on the corvetteforum who was an engineer at GM working on the knock system on these cars. He might know something about it.

I'll see if I can find his username.

Here he is:
http://forums.corvetteforum.com/show...01&postcount=7

Last edited by sbs; Oct 25, 2007 at 02:08 AM.
Old Oct 25, 2007 | 05:50 AM
  #6  
1fastgixxer's Avatar
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looks like a flux capacitor
Old Oct 25, 2007 | 03:25 PM
  #7  
busta9876's Avatar
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From: West Plains, MO
I was thinking something along the lines of a developement pcm...I got a harness with it like I have never seen.

all the sensor connectors are exactly the same distance from the pcm, but it has 4 oxygen sensor connections, obd2 port, and plug ins for relays. also no injector leads, just a 10 pin connection that says injectors. I'm thinking it plugged into some sort of simulator or somthing maybe.

I can not communicate with PCM with ether obd1 or obd2 hardware..so no clue on if its good or not.

anyways..something interesting..
Old Oct 25, 2007 | 06:50 PM
  #8  
Irish350's Avatar
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From: Tempe/Phoenix
very odd..
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