There is three wires that my 84 does not have.
I am going out to check further and will update.The car the 87 trans came out of was a 84 too.
Will it be o.k.in mine?
Anything i have to do?

 

I had a look at the trans in my 84 Camaro to come out and it has only one green wire coming from it.The trans that i want to put in has recent rebuild,from a 84,dates as a 87 and has three wires.Can anyone help me and tell me if i can use it!

 

They both should have 3 wires. Does your car have the 4-pin plug, but just one wire in it? Still computer controlled engine? Sounds as though someone has gotten rid of the computer control, and put in an aftermarket lockup switch. The transmission should just swap right in! The only thing electronically controlled on it is the torque convertor clutch, and the other 2 wires are to tell the ECM when it is in third, and fourth gears.

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Working on:
'84 Z28 LG4 305 with 200,000 original miles!
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350 (ZZ430)
using primarily GMPP parts.
Short block sitting on a stand. (Man, those Fast-Burn heads sitting on it look good!)

Starting to look like the Kicker poster child!

ASE Certified Master Tech

 

My Camaro is non ecm.The firebird the trans came out of was 84 ecm i think.Can i still use it?I am sure mine is stock orig. with one wire.What do i do with the other two wires?

 

There were a number of different interal wiring arrangements used in 700R4's, some of them had a single wire carrying +12v with the solenoid grounded internally. If you're worried about the wiring, you can pull the pans off of both transmissions and swap the wiring harness and switches between the two valve bodies.

 

Thanks for the replies.
I still need to know if and how i can modify the 3 wire for my car.or is changing the valve body the only way?

 

It will work as is, but you may not get torque converter lock-up unless you get the wiring straightened out.

------------------
Working on:
'84 Z28 LG4 305 with 200,000 original miles!
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350 (ZZ430)
using primarily GMPP parts.
Short block sitting on a stand. (Man, those Fast-Burn heads sitting on it look good!)

Starting to look like the Kicker poster child!

ASE Certified Master Tech

 

If you swap them as-is, the converter will probably lock up in all gears except 1st. This isn't such a bad thing, but it can be annoying having the engine bog and surge in 2nd as the clutch locks and unlocks. You probably have all the parts you need to make everything work properly, since your car (I'm guessing a Canadian LG4) didn't have a computer originally and the new transmission should have the pressure switches you'd need.

Send me an e-mail if you want and I'll try to explain more.