Suspension and Chassis Questions about your suspension? Need chassis advice?

25mm rear sway bar

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Old 06-16-2004, 12:13 AM
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Car: 88 Camaro SC
Engine: 2.8 ->305->350
Transmission: 700R4
25mm rear sway bar

Do these really exist?
Part Number?
Picture? Picture of bar being measured?
What year/ options required and cars did they come on?

I've heard people say these were a pontiac only part I've heard others say they were a 1le part, how about helping me get this straightened out once and for all.
Old 06-16-2004, 01:44 AM
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Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
no, later ws6 and z28 cars had 36/24 combo, same as 1LE. you can get a 25.4 mm from spohn
Old 06-16-2004, 11:22 PM
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Car: 88 Camaro SC
Engine: 2.8 ->305->350
Transmission: 700R4
I know spoon offers a 25mm bar, but I am talking about the stock 25mm rear sway bar. Supposed to be very rare.
Old 06-17-2004, 12:31 AM
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Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
so rare, it doesnt exist
Old 06-17-2004, 01:10 AM
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Car: 88 Camaro SC
Engine: 2.8 ->305->350
Transmission: 700R4
This was the first appearance of 16" wheels on a third generation f-body. The 1500 15th Anniversary Trans Ams also included upgraded WS6 suspension with new 25mm rear sway bar vs the normal WS6's 23mm bar.
That came from the Tech Data Section, that's where I was getting the information from to begin with.

But I guess somebody could have easily hit the 5 key insted of the 4 key by accident. Understandandable, also did a search of the suspension form some people do claim to have a 25 mm stock rear sway bar, but I guess that too could just be incorrect measuring techniques. Anyway of closing this thread so that nobody need post about this issue again.

Last edited by Genesis98; 06-17-2004 at 01:13 AM.
Old 06-17-2004, 02:31 AM
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Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
thats interesting, i had never seen that before. anybody have a 15th they would be willing to crawl under and measure to make absolutely sure. the mods would have to be the ones to close a thread, but im kinda curious now. i just remembered about a thread on the FAQ board that has all the sway bar info anyone could ever want, but it says nothing about a 25mm bar
https://www.thirdgen.org/techbb2/sho...threadid=59687
Old 06-17-2004, 09:14 AM
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Car: '87 Cam RS V6
Engine: Top Secret
Transmission: DYT700R4 custom inerts and conv.
I have the 34front/25rear Spohn combo on my car- but no I have never heard of a factory 25 rear bar.
Old 06-17-2004, 11:52 AM
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Car: 1984 Trans Am
Engine: GMPP 350 V8
Transmission: 700R4
Axle/Gears: 3.23
I have heared from several sources that the 84 15th T/A came w/ a 25mm rear sway bar. Ive read this in vintage magazine articles/ reviews from 84, as well as the tech data on this site.

My 84 came w/ the 23mm rear bar. I will have to ask a friend of mine w/ a 15th to measure his.
Old 06-18-2004, 11:04 PM
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Car: 88 Camaro SC
Engine: 2.8 ->305->350
Transmission: 700R4
Week-end Project maybe?
Old 06-19-2004, 10:53 AM
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I always thought all 25mm (more commonly referred to as 1") bars were aftermarket and were more drag race oriented than handling performance. That's a big bar for the rear!

Genesis98 - check your PMs
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