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sway bar sizes for 91 formula

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Old 05-14-2001, 02:56 PM
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sway bar sizes for 91 formula

Hey all , I need toknow what the sizes are for the fron and rear sway bars are for a 91 formula , i want to order poly bushings for it , but car is at home and i dont remember what size they are ,

thanks

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Old 05-15-2001, 01:21 AM
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Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
The fronts could be 32mm, 34mm, or 36mm, and the rears can be 19mm, 21mm, or 24mm. Every car is different so you really need to measure them. However, all Formulas that I know of come with the WS6 package, which is usually the 36/24 combo.

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Old 05-15-2001, 07:19 AM
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Car: 90 Formula
Engine: 305
Transmission: 700R4
Axle/Gears: 9 bolt/3.27
There was also a 23mm bar for the rear as well. Also,just because the car has WS6 DOESN'T mean it has the 36/24 combo. Check the latest GMHTP for the suspension article on Magnum TPI. That car has the 34mm bar up front. Check your RPO label in the console. The cars with FE2 usually but not always came with the 36/24 combo. FE1 and Y99 had the smaller bars.
Hope this helps.


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