Help with 5.0 TPI Install
Thread Starter
Junior Member
Joined: Aug 2007
Posts: 49
Likes: 0
From: Michigan
Car: 1987 Silver IROC-Z
Engine: 305 V-8 300HP LT1 Cam
Transmission: T-5 5-speed
Axle/Gears: 3.42
Help with 5.0 TPI Install
I have a 1987 IROC Camaro with a 5.0 TPI engine. I removed the engine to rebuild and install a manual transmission, and have some wires and tubes that I don't know where they go. Hopefully someone can identify and help me with the final stages of getting the engine back as it was. The engine is stock and none of the components have been changed since I removed the engine, other than the transmission.

This red wire is in the back of the engine on the passenger side right above the AC box. Where does this wire go? It almost looks like a fuse wire?
This green wire has a clip on the one side so it goes into something that clips together. This wire comes from behind the distributor. Where does it go?

I have one of the wires that go into the coil, but can't find the wire that I put the #3 wiring label onto. This car has a factory tack, shouldn't the second wire be located in the same wiring harness as the one that I have? Where do I find the wire that I labeled #3.

Again I removed the automatic transmission that this car came from the factory with. Was this four prong connector for the automatic? And are two of these wires the wires that I need to connect to my 2 prong connector that is on the side of my 5-speed manual transmission?
Also, there are two ports on the side of the throttle body. One large and one smaller. Does the smaller port go to the PCV Valve?
Thanks in advance for any assistance that you can provide me on my search for the final assembly of my pride and joy.
Joe

This red wire is in the back of the engine on the passenger side right above the AC box. Where does this wire go? It almost looks like a fuse wire?

This green wire has a clip on the one side so it goes into something that clips together. This wire comes from behind the distributor. Where does it go?

I have one of the wires that go into the coil, but can't find the wire that I put the #3 wiring label onto. This car has a factory tack, shouldn't the second wire be located in the same wiring harness as the one that I have? Where do I find the wire that I labeled #3.

Again I removed the automatic transmission that this car came from the factory with. Was this four prong connector for the automatic? And are two of these wires the wires that I need to connect to my 2 prong connector that is on the side of my 5-speed manual transmission?
Also, there are two ports on the side of the throttle body. One large and one smaller. Does the smaller port go to the PCV Valve?
Thanks in advance for any assistance that you can provide me on my search for the final assembly of my pride and joy.
Joe
Last edited by vette_1989; Mar 23, 2011 at 11:05 PM.
Thread Starter
Junior Member
Joined: Aug 2007
Posts: 49
Likes: 0
From: Michigan
Car: 1987 Silver IROC-Z
Engine: 305 V-8 300HP LT1 Cam
Transmission: T-5 5-speed
Axle/Gears: 3.42
Re: Help with 5.0 TPI Install
I found the wire that connects the coil to the distributor, so that mystery has been solved. I also understand that there is a oxygen sensor that has to be installed in the header. I hope that one of my mystery wires will attach to the oxygen sensor.
Supreme Member

Joined: Jul 2009
Posts: 2,328
Likes: 9
From: Kitchener, ON
Car: 1988 GTA
Engine: LB9
Transmission: T5
Axle/Gears: 3.45
Re: Help with 5.0 TPI Install
Supreme Member

Joined: Jul 2009
Posts: 2,328
Likes: 9
From: Kitchener, ON
Car: 1988 GTA
Engine: LB9
Transmission: T5
Axle/Gears: 3.45
Member
iTrader: (1)
Joined: May 2008
Posts: 252
Likes: 1
From: Scotia New york
Car: 1987 Iroc convertible
Transmission: 700r4
Axle/Gears: 3.42 posi
Re: Help with 5.0 TPI Install
First pic, the red wire looks like mine and goes to the hood lamp. Check to see if that it.
Thread Starter
Junior Member
Joined: Aug 2007
Posts: 49
Likes: 0
From: Michigan
Car: 1987 Silver IROC-Z
Engine: 305 V-8 300HP LT1 Cam
Transmission: T-5 5-speed
Axle/Gears: 3.42
Re: Help with 5.0 TPI Install
Are there suppose to be one or two (one for each side) oxygen sensors?
Trending Topics
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Help with 5.0 TPI Install
Next time take pics or label everything ; makes life MUCH easier
One on a L98
One on a L98
Last edited by vetteoz; Mar 28, 2011 at 03:50 PM.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Help with 5.0 TPI Install
PCV valve is in Drv side cover
Should have a seperate 2 wire plug ( purple / yellow wires ) to go to VSS for speedo on the same harness as plug you show.
Last edited by vetteoz; Mar 28, 2011 at 03:52 PM.
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