So on my 84 z28 I upgraded my fron sway bar to a 38mm according to my measurements and wonder bar as well and I got KYB-GR2's all around as for my rear I have this wimpy 25mm...what would be a good size to upgrade to...and I go to the junkyards so what kind of cars would carry a good upgradeable sway bar for my car..thanks!

 

Someone correct me if I am wrong... but didn't the IROC Camaro's have the thickest swaybars available from the factory?

 

You sure you got those measurements correct? I have never seen an OEM or aftermarket 38mm bar for these cars and there are no OEM 25mm bars. What behavior is the car exhibiting that you think you need a larger bar?

 

Well my measurements are most likely wrong in that case.....because the front sway bar I got it off an IROC and well when ever I take a sharp corner the front end seems to take it good but as I start to exit the corner the rear isn't as stiff and seems to swing itself.

 

and what would the OEM size be for my 84 z28 rear sway bar?

 

Swing itself, as in the rear end will come around?

If that is the case, then a larger rear bar will make it WORSE.

Not sure about the 84 off hand. The info is on this site somewhere.

 

well it dont mena like swings back its kind fo hard to describe....but isnt better if u do upgrade to a thicker sway bar?wont it give your car better handling....but then again I dont want to thick of a bar in the rear because Ive heard that that can be dangerous.

 

If the car has a tendency to oversteer (rear kicks out before the front), you want to either increase the size of the front bar or decrease the size of the rear, or both. If you increase the size of the rear, you will make the situation WORSE. Sway bars are tuning tools, they should not be the first thing you start replacing for "better" handling.

What you describe sounds like oversteer.

 

there you thats exactly the word i was looking for...LOL...thanks for the help.....so your saying that I should cut down on the rear sway bar??becuase my rear bar is stock..

 

Those measurements have got to be wrong. I've got the largest sway bars available. They're 36 mm front and 24 mm rear.

The general consensus is to get the biggest bar for the front that you can and then tailor the rear bar according to your liking. Some go with a 36/22 combo. Many just stick with the 36/24.

 

Don't confuse power oversteer with chassis oversteer. A car that is understeering badly can be made to oversteer when power is applied.

A car with too large a front bar will understeer as mentioned in the threads above.

ramey

 

Probably 32mm/21mm stock - hard to say since there were some wierd variations in the early years. IROC typically is 34/23 and WS6 is 36/24.

The largest rear factory bar would be the hollow 24mm WS6 - found on optioned Trans Ams. There are factory 18, 21, 23, and 24mm bars. And I have seen 25mm aftermarket bars.

The best upgrade is to change the factory rubber bushings with poly ones and to also change the endlinks to poly donuts too (if not new hardware). This goes for front and back bars.

 

My '86 Z28 still has the stock sway bars on. The front is 34 mm.