Fox T-Bird/Cougar Forums

Technical => Engine Swapping => Topic started by: hellsing73 on November 21, 2010, 02:35:49 PM

Title: v6 to v8
Post by: hellsing73 on November 21, 2010, 02:35:49 PM
ok guys i have an 87 with a v6 thats im puting a v8 out of an 88. the other day i seen that the harness that come out the fire wall on the driverside of the v6 87 have diff plugs and number and color of wires than my 88 v8 car doses. so what i need to know if any one can help is what do i need to go to make it work for me. i realy dont want to pull out the whole dash and switch the wireing to the v8 88 wireing.
Title: v6 to v8
Post by: Beau on November 21, 2010, 02:48:54 PM
You'll either have to find an '87 engine harness, OR,
match everything to the '88 harnesses, OR,
get an EVTM and get real skilled in the art of repinning connectors and wires..
Title: v6 to v8
Post by: hellsing73 on November 21, 2010, 06:01:42 PM
Ok any one know of one for sale I need it as soon as I can get it
Title: v6 to v8
Post by: Bruce M on November 21, 2010, 07:46:32 PM
You'll need a carbed 331 and a T56.:burnout:

At least thats what I need.
Title: v6 to v8
Post by: Beau on November 22, 2010, 02:13:28 AM
Meh. Carburetors belong in museums and that dumb shiznit they do in, umm...nascar, I think it is?
Title: v6 to v8
Post by: hellsing73 on November 22, 2010, 04:03:45 AM
I need a evtm for an 87 I have one for 88. The big thing the plugs r not the same as with the color too
Title: v6 to v8
Post by: hellsing73 on November 24, 2010, 07:48:34 AM
any one help id realy like not to rip the dash out and redo it all
Title: v6 to v8
Post by: Dougy_Fresh on November 27, 2010, 10:10:03 PM
the dash is actually super easy to pull. i can have mine out beside my car in 30 minutes tops
Title: v6 to v8
Post by: hellsing73 on November 27, 2010, 10:13:43 PM
i know its not that hard but i dont want to take more out than what i have to
Title: v6 to v8
Post by: tirefryr on November 28, 2010, 06:38:05 PM
It's going to be easier and less time-consuming swapping harnesses and computers than re-pinning.
Title: v6 to v8
Post by: Beau on November 28, 2010, 07:05:38 PM
I might know where one, and maybe even 2 '87 5.0 harnesses are...I just have to go ask if I can look at the cars to see if they are truly '87's, and what shape the engine wiring is in. I need some other small pieces for something of mine, so maybe I can get out there before work one day this week and see. Not sure if they let folks wander around anymore...
Title: v6 to v8
Post by: hellsing73 on November 28, 2010, 10:02:34 PM
ya i know thats way i want to go with the harrens
Title: v6 to v8
Post by: hellsing73 on November 28, 2010, 10:03:52 PM
Quote from: ThunderbirdSport302;343567
I might know where one, and maybe even 2 '87 5.0 harnesses are...I just have to go ask if I can look at the cars to see if they are truly '87's, and what shape the engine wiring is in. I need some other small pieces for something of mine, so maybe I can get out there before work one day this week and see. Not sure if they let folks wander around anymore...

ya let me know. theirs a guy on here that has one im just waiting on him to get back to me more about it. but i need it by this weekend
Title: v6 to v8
Post by: 88CougarGT on November 28, 2010, 11:54:41 PM
Dash doesn't need to come out to get the puter harness out.  The hardest part is the PCM Relay.  Once that is loose, fish it out from the engine side.  I did mine both ways this way (in and out) and my car has the dreaded climate control.
Title: v6 to v8
Post by: hellsing73 on November 29, 2010, 06:18:40 PM
ok but pulling that out is the last thing i want to do. i want to keep it close to stock as i can right now
Title: v6 to v8
Post by: 88CougarGT on November 29, 2010, 07:31:39 PM
Ok.  Repinning the connector will be a major pita with the harness in the car.  It really wasn't all that hard.  I have an EVTM somewhere and Jrcassity has scans of his somewhere.

See if you can PM him.
Title: v6 to v8
Post by: hellsing73 on December 04, 2010, 11:26:34 AM
Ok can any one help. I see that the black plug for the harness on the driver side has a diff shape that the other and a guy has one he said its for an 87 but it looks just like an 88. I have a pic of my 87. And I have pics of the one the guy said is an 87 v8 harness
Title: v6 to v8
Post by: 88CougarGT on December 04, 2010, 02:42:28 PM
Pics?  I'm confused about which connector you are talking about.
Title: v6 to v8
Post by: hellsing73 on December 04, 2010, 05:02:00 PM
I'm talking about the black one ull see when I get the pic up
Title: v6 to v8
Post by: hellsing73 on December 04, 2010, 06:42:15 PM
(http://img39.imageshack.us/img39/2091/20101204111215.jpg) (http://"http://img39.imageshack.us/i/20101204111215.jpg/")
Title: v6 to v8
Post by: TurboCoupe50 on December 04, 2010, 08:15:47 PM
I have that black plug on my '87 harness that's in my Turbo Coupe, had to rebuild the female connector and wire it into the body harness... It should have a green/red wire in it that feeds power to the EEC relay, F/P relay, coil etc... Power to that one connection is all that's necessary to run the engine, of course this assumes the fuel pump harness is still connected to the EEC harness...

I've seen the gray plug in the '88 cars, maybe the late '87 had the same setup???
Title: v6 to v8
Post by: hellsing73 on December 04, 2010, 09:46:45 PM
any one have a wire diagram for it and could fill me in on what i can do then. i have 2 88 v8 and 1 87 v6 harness. i dont have a problem cuting the end off and rewireing it i just dont know what wire is for what. the fuel pump is useing the stock setup wires and all.
Title: v6 to v8
Post by: 88CougarGT on December 05, 2010, 06:16:52 PM
My 88 has the grey harness I believe.
Title: v6 to v8
Post by: hellsing73 on December 05, 2010, 08:59:48 PM
Ya as my 88 that I took the motor out of both plugs look like the gray one. But the 87 the black is not the same. So I need one for an 87 or need to know what colors go to what so I can wire the 88 harness to the 87s mane harness
Title: v6 to v8
Post by: hellsing73 on December 08, 2010, 08:34:33 PM
any one have a wiring diargam of the plugs that they are willing to post?
Title: v6 to v8
Post by: 93customcougar on December 29, 2010, 03:07:13 AM
ok guy i'm new here and i'm in need of finding 302 motor mount brackets for 93 xr7,,, car had 3.8, swapping out for a 69 mustanf 302 with carb,,, but i need the mount brackets,,,, can someone give me a hit to where to find,  other that salvage yards. here in stl hard to find a cougar with 5.0 or thunderbird all have 3.8 or 4.6
Title: v6 to v8
Post by: hellsing73 on December 29, 2010, 07:48:36 AM
you might get more help if u start your own thread
Title: v6 to v8
Post by: hellsing73 on February 17, 2011, 10:03:06 AM
did you find out if they were 87s?
 
Quote from: ThunderbirdSport302;343567
I might know where one, and maybe even 2 '87 5.0 harnesses are...I just have to go ask if I can look at the cars to see if they are truly '87's, and what shape the engine wiring is in. I need some other small pieces for something of mine, so maybe I can get out there before work one day this week and see. Not sure if they let folks wander around anymore...
Title: v6 to v8
Post by: hellsing73 on March 27, 2011, 06:13:50 PM
Ok so today its runing but I have no speedo numbers no power locks no clock and no lights when I open the door or when I. Turn the dimer switch. Dose anyone know. I swaped the v6 dash harness to a v8 one and still won't work right
Title: v6 to v8
Post by: vinnietbird on March 27, 2011, 11:08:22 PM
Check the fuses really close. I had the same issues, but because I had a grounded harness. I had installed a fastener into the body and it went through a wire and grounded it to the body, which caused blown fuses. After I figured out what I did with a little help from a friend here (Thanks Jerry), I fixed the problem, everything works, and no issues. Report back what you find. One way or another, we'll all get your problem figured out.
Title: v6 to v8
Post by: hellsing73 on March 28, 2011, 01:10:32 AM
It was the fuse some how when I looked at it the first time I missed it being blown