wiring question (obd1 / pre obd1 question)
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From: Manama Bahrain
wiring question (obd1 / pre obd1 question)
My car is a 93 auto. I really want to switch from speed density setup to the maf 94+ setup. I'm having a hard time finding a used auto Vette wiring harness. My question is could I make a 94-95 manual harness work with my auto? What's the difference between a 1994 Vette harness Vs F-body harness? I do know for a fact the computers for the 94 vette and f-body are different but it's really minor.
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From: Portland Oregon
Originally Posted by honda hunter
My car is a 93 auto. I really want to switch from speed density setup to the maf 94+ setup. I'm having a hard time finding a used auto Vette wiring harness. My question is could I make a 94-95 manual harness work with my auto? What's the difference between a 1994 Vette harness Vs F-body harness? I do know for a fact the computers for the 94 vette and f-body are different but it's really minor.
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From: Manama Bahrain
Originally Posted by tjwong
You can actually use a F body PCM to run the LT1. I would get an aftermarket harness, unless you are handy with splicing wires with a diagram. You can then leave the stock ECM in place, your transmission was not controlled by the ECM other than the TCC system. All shifting was done manually, it wasn't until 94 that the new 4L60E was used in the C4. Until that time it was a non-electronic transmission. Personally it really isn't worth all the trouble to do. What is your reason behind making the change. If its a tuning issue, any competent tuner should be able to burn you a chip for what ever engine combination you have.
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From: VA
Originally Posted by honda hunter
The Fbody computer is different from looking at the research Ive done. The 94 vette computer has a instant fuel per gallon thingy were as the f-body computers dont.
I have an F-body computer in my vette as do many other people.
The only reason I wanted to do the conversion was because Everything from my 94 camaro is going into my 93 vette and I thought it would all be so simple. I changed my mind. Im going to stay with the speed density. The more I learn about doing the conversion the more scared I get.
If you're only putting some of those componens from the camaro into the vette, then you're going to have to do some work to get things working in either mode (throttle body is different, wiring harness is different, etc.) so since you have to do work either way, might as well use the later system.
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From: Manama Bahrain
Originally Posted by Vis Croceus
You're really going to tell one of the leading LT1 tuners that he doesn't know what he's talking about in terms of interchangeability?
Originally Posted by Vis Croceus
I have an F-body computer in my vette as do many other people.
Originally Posted by Vis Croceus
If you're putting everything (engine, 4L60E, PCM) from the 94 camaro into the vette, then you are already running with the MAF, and "sticking to speed density" is what would actually take effort.
Originally Posted by Vis Croceus
If you're only putting some of those componens from the camaro into the vette, then you're going to have to do some work to get things working in either mode (throttle body is different, wiring harness is different, etc.) so since you have to do work either way, might as well use the later system.
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From: Manama Bahrain
Originally Posted by Vis Croceus
Just out of curiosity - what are you swapping for?
It sounds like you have two working cars and two working engines?
It sounds like you have two working cars and two working engines?
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From: Manama Bahrain
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From: VA
Originally Posted by honda hunter
Heres the story. I had/have a 1994 A4 Convertible with a newlly built 383 with all the fixins and a Probuilt 4L60E. Both only had the break in miles. The Camaro had everything but I always wanted a C4.
Would you really lose much on the camaro with the 93 drivetrain? Heck, most places in the US you could advertise it as having a drivetrain transplanted from a vette, and charge _more_.
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From: Manama Bahrain
Originally Posted by Vis Croceus
Gotcha. I think you'll end up regretting not swapping trannys. You're going to need a rebuild to handle the power, and the 4L60E is nicer to work with - easy to change shift points to suit a built engine.
Would you really lose much on the camaro with the 93 drivetrain? Heck, most places in the US you could advertise it as having a drivetrain transplanted from a vette, and charge _more_.
Would you really lose much on the camaro with the 93 drivetrain? Heck, most places in the US you could advertise it as having a drivetrain transplanted from a vette, and charge _more_.
