Is an 89 IROC pretty much a guaranteed T5 WC?
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Joined: Jan 2000
Posts: 1,190
Likes: 90
From: Mississauga, Ontario Canada
Car: 1987 GTA
Engine: 5.7
Transmission: T5WC
Axle/Gears: 3:27
Is an 89 IROC pretty much a guaranteed T5 WC?
It's a 305 car. Just wondering if it would be a WC transmission
Joined: Sep 2005
Posts: 27,918
Likes: 2,448
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Is an 89 IROC pretty much a guaranteed T5 WC?
Would have come with the 2md design. But after all these years, who knows.
EEeeeeezy enough to see by just getting up under the car and looking.

2nd design is the bottom one.
EEeeeeezy enough to see by just getting up under the car and looking.
2nd design is the bottom one.
Thread Starter
Supreme Member

Joined: Jan 2000
Posts: 1,190
Likes: 90
From: Mississauga, Ontario Canada
Car: 1987 GTA
Engine: 5.7
Transmission: T5WC
Axle/Gears: 3:27
Re: Is an 89 IROC pretty much a guaranteed T5 WC?
This one is still installed in the car. Is the Torx bolt visible on the side of an installed transmission?
Joined: Sep 2005
Posts: 27,918
Likes: 2,448
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Is an 89 IROC pretty much a guaranteed T5 WC?
You can see the line where the bottom of the bell housing was on my transmissions there. All that dirty stuff below the line is out in the open.
Thread Starter
Supreme Member

Joined: Jan 2000
Posts: 1,190
Likes: 90
From: Mississauga, Ontario Canada
Car: 1987 GTA
Engine: 5.7
Transmission: T5WC
Axle/Gears: 3:27
Re: Is an 89 IROC pretty much a guaranteed T5 WC?
The car was so far gone that the jack went through the frame. The floor was so badly rusted that I was able to put my cell camera into the tunnel and snap a pic. Found this. Based on what I've learned here, that bolt makes it a non World Class
Joined: Jul 2000
Posts: 6,522
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From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Re: Is an 89 IROC pretty much a guaranteed T5 WC?
Good point. I'm not certain that was 1988-up off the top of my head or if one fits the other. Also because I bought an 88 WC V8 T5 with an 86 top shift rail cover, I'd have still looked at the front of the case by the bell; you can tell without removing the trans.
Thread Starter
Supreme Member

Joined: Jan 2000
Posts: 1,190
Likes: 90
From: Mississauga, Ontario Canada
Car: 1987 GTA
Engine: 5.7
Transmission: T5WC
Axle/Gears: 3:27
Re: Is an 89 IROC pretty much a guaranteed T5 WC?
I'd tried. I just couldn't get the car off the ground. It was a rusted out disaster sitting in the dirt.
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Thread Starter
Supreme Member

Joined: Jan 2000
Posts: 1,190
Likes: 90
From: Mississauga, Ontario Canada
Car: 1987 GTA
Engine: 5.7
Transmission: T5WC
Axle/Gears: 3:27
Re: Is an 89 IROC pretty much a guaranteed T5 WC?
I could've cut the drive train out with a butter knife, I'm not kidding.
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