LT1 ECU interchange question

[mekkis]

Hey, I've been looking for a 92-93 LT1 '278 ECU for a couple days with no luck. It's a stock engine 4AT swap into some pre-war iron, just a nice driver. I am pretty sure I can rewire the ECU plugs and run the 94-95 '8051 ECU set up for the early 4L60E without PWM TCC - are there any issues I am not thinking of? Next, i realize I am going out on a limb and the answer is probably no, but I already have a 96-97 '399 ECU laying around. Will that work if i disable PWM TCC codes or am I asking for trouble? Thanks!

[jthompson122183]

what year trans are you using?

[mekkis]

what year trans are you using?

Probably whatever comes in a 92-93 Corvette, I assumed that is a 4L60 but don't really know anything about that era. I am dealing with a good old boy shop who is going through an ex-employee of theirs to deal with me.

[Hog]

Probably whatever comes in a 92-93 Corvette, I assumed that is a 4L60 but don't really know anything about that era. I am dealing with a good old boy shop who is going through an ex-employee of theirs to deal with me.

There is some weirdo Vette stuff around this time.
1997-2005 is 4l60E/65E mounted back on the transaxle driveshaft in front of transmission.
1994-96 Vette is 4l60E
1990-1993 Vette is 4l60
1982-1989 Vette is 700-R4

92-93 GEN II SBC LT1 Vette was Speed Density
1994-96 LT 1 Vette with auto trans was MAF
1994-with manual trans was GEN II LT1
1996 with manual trans was GEN II LT4 (330hp@56800rpm/340lb/ft torque@4000rpm)
peace
Hog

[mekkis]

1990-1993 Vette is 4l60

99% of my domestic experience is Ford and 99+ GM. In the fifteen years I've been tuning I have done two '278 ECM, both manual trans. IIRC the 4L60, no -e, is a mechanically shifted 4AT with TCC? Control wise a 700R4? I just need to find a way to make this car run for these folks, and I am not finding another '278 ECM.

[lionelhutz]

Besides the transmission difference and MAF sensor missing, the '8051 is also sequential injector firing and the harness won't have enough injector wires for this. Instead of 8 wires to control the injectors individually, the harness will only have 2 wires to fire 4 injectors at once.

I believe you'd have to set it up as a manual and install another means to control the TCC lockup, and none of these solutions work as well as a ECM does it. You might be able to set it up as an automatic and turn-off all the codes for the transmission and still get it to control the TCC lockup but I'm not sure it will co-operate doing it that way.

[MYLTWON]

This is a swap? If so steer as far away from the 92-93 computer as possible. I would get a harness from a 94-95 and get a computer from the same. From what I am gathering the engine is a 92-93 and the trans is a 4l60/700r4 correct?