58mm TB
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Joined: Sep 2009
Posts: 121
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From: Green Bay WI
Car: 85 iroc
Engine: 383
Transmission: 700r4
Axle/Gears: 3.42
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Joined: Sep 2003
Posts: 6,859
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From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: 58mm TB
That may be an LT1 58mm throttle body. If so you will have to use the LT1 IAC and TPS. Then buy the adaptor harnesses. Also you might have to get creative on the throttle cable. The one that is missing is probably for the cruise control. Another area to get creative or just sell it.
Last edited by 1989GTATransAm; May 9, 2010 at 07:34 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: 58mm TB
Looks as if the accel linkage is removable so you might be able to swap out.
Proffesional Products make TB's that come with both style linkages and you fit what ever you need
Strange thing is it is early style linkage without the TV cable mount? Late style has a quadrant the cable lays in.
Any IAC housing ( and IAC ) will mount but you need a late style TPS .
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: 58mm TB
Just looking at ;is the linkage in two seperate pieces?
The outer bracket would appear to mounted upside down which when positioned the other way up would give the accel and TV cable mounting points in the correct early style location
Accel cable at bottom ,forward of shaft center line and TV at top ,rear of center line
The outer bracket would appear to mounted upside down which when positioned the other way up would give the accel and TV cable mounting points in the correct early style location
Accel cable at bottom ,forward of shaft center line and TV at top ,rear of center line
Thread Starter
Member
Joined: Sep 2009
Posts: 121
Likes: 0
From: Green Bay WI
Car: 85 iroc
Engine: 383
Transmission: 700r4
Axle/Gears: 3.42
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
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