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Discussion Starter #1
Been looking for a biger swaybar at the salvage yards.
In the last generation of B/D cars all I could find was 30mm which I had and 33mm.
Brought a slide caliper & measured many cars over some time.
Seemed like the police, taxi, & SS got the 33mm.
Never came across a comercial chassis of this era in the yards.

Already had the 30mm with the orignal FE1 suspension.
One reason why I waited was 3mm isn't that much larger.
It's 10%, but barely noticable with the eye.

Finely grabed a larger swaybar off a Roadmaster with FE2 in the pic below.
A rust free low mile car that fell victom to an cooling system blowout & optispark fail.
Too bad the yards here don't sell the cars.
Took about a week for the limited slip to disappear.
Then the windows got busted out.
Someone grabed the engine.
I came back for the clean factory exhaust... I'll make it fit.

Anyways it definatly made the difference.
Car is much leveler (is that a word) on turns.

The old bar bushings and endlinks were less than a year old & still in good condition.
So it was difinatly the bar & not the bushings & endlinks.
Changed the endlinks again cause their cheap.

To be honest the FE1 front springs could be changed for a stiffer ride.
Just dread removing used at the yard and then replacing mine.

The frame bushings can be a PITA ordering.
Places like Rock Auto sometimes lists parts for your car that never fit.
Like HEI didtributor parts & strut mounts for a 95 Fleetwood.
They sold about 9 different sizes.
When converting fraction, decimal, & mm nothing works out exactly.
30mm=1.81"
1 3/16 = 1.89
Moog #5248 sold as 1 3/16" was actually 1.80"
Used Moog 5248 which fit fine.
Maybe it's splitting hairs on the size.
But ordering from Rock Auto it's almost not worth doing returns on small items.






582565
 

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Discussion Starter #2
Just a heads up on the bar bushing straps.
Replace the factory bolts.
I did this last year.
Used metric Allen bolts, lock washer, & small washer.
Not much clearance for common head hex bolts.

Many have wrote about a problem with these bolts or the frame threads being damaged.
I think the bolt was a tri shape thread cutter, but it's been awhile.
Maybe the trheads are factory deformed to prevent loosening.
Some think the factory over torqued them.
Or maybe a rust thing.

The FSM does not list this bolt as a 1 time replacement item or using any thread locker.
Torque is 24 fl lbs.
Or some real bolts and a few taps with the 1/2" impact going back and forth to tighten eavenly.

Also I didn't see anything about tightening on the ground in the FSM.
General rule is suspension components should be tightened with the car sitting normal on the ground.
And give it a few bounces to help it settle 1st.
In reality it's not done as often as it should.
Depends on the type of lift used & if there's access to give a final tighten with wheels on the ground.
In the paid world time is money.
 

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1980 FBC
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I would think a 10% difference gives a lot more strength because that 10% addition to 30 mm is a lot of metal in a circle.
 

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Discussion Starter #4
Your right Apeman
Didn't think of it in area

30mm sway bar area = 2827 mm2
33mm syar bar area = 3421 mm2

About 21% more area from FE1 30mm bar to FE2 33mm bar
 

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96 Fleetwood, 94 Fleetwood, 07 CTS, & 94 Caprice Wgn
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From what I remember and read, the FE1's are 28 mm, the 9c1's, Impala's, commercial chassis and FE2's are 30 mm. There are aftermarket 33 mm available.

I just measured my 3 cars: the 96 FW base is a 28 mm, the 94 FW w/commercial chassis is 30 mm and my 94 Caprice Classic wagon is also a 30 mm, which I got off of a 9c1.

Some helpful info: Sway bar size SS same as 9c1?

Tom
 

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Discussion Starter #6
Dang it Tom your right.
I got my numbers mixed up in my head.

My stock FE1 was 28mm.
The FE2, SS, & 9C1 all seemed to be 30mm.
I only came across the 2 sizes.
Guess the sway bar bushings should have been closer to 1.18".
Eh. It seemed like a tight fit so I'll run with it.
 

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96 Fleetwood, 94 Fleetwood, 07 CTS, & 94 Caprice Wgn
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I thought that's what they were, but I had to check first. It's real easy to measure with twin fans. As you know, place the two bars side by side, and there definitely is a noticeable difference. Thanks for this post though, I will be looking for a bar to put on the 96 base.....cheap upgrade.

Tom
 
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