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Old 02-16-2011, 08:10 PM
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sway bar or no sway bar

building a SB 34 ford cabriolet, mustang off the shelf tube control arm coil over shock front suspension, 4 link coil over 9" rear suspension. Gonna be a while before it's road worthy. Do i need to install sway bars? front and rear?

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Old 02-16-2011, 08:12 PM
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I would. The only time i wouldnt use them is if you want the suspension to flex a lot, like off roading. For the street, at least in the rear, front not so much.
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Old 02-17-2011, 06:04 AM
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Got 'em front and rear on my '31's chassis:






This car has an IFS and a coil over 9"
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Old 02-17-2011, 06:21 AM
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Quote:
Originally Posted by bigdog7373
For the street, at least in the rear, front not so much.
Usually if a car only has one sway bar you will find one on the front before you find one in back.
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Old 02-17-2011, 07:15 AM
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Coil overs on ISS normally do not need sway bars. If you have IFS and leaf springs in the rear, then a rear sway bar greatly improves handling. Fatman's agrees with this. I have coil overs on the front of both my 36s with no sway bar. The coupe has leaf springs on the rear and a sway bar. The PU has triangulated 4 bar on the rear with coil overs and no sway bar. Both handle quite well. Having said that, sway bars will improve handling but how much depends on what the rest of the suspension products are and how they are installed.

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Old 02-17-2011, 09:41 AM
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Having experimented with various anti roll bars last year I think it really depends on just how soft/hard the spring rates are.

Soft front end and you really need some anti roll bar.

Generally we use pretty soft rear coils or leafs so some anti roll bar is ok here too.

It's a balancing act and if you have to buy the bars there are limits.

If your suspension is really stiff then you can probably pass on the bars.

I run a pro street chassis with a very narrow rear end. The MII front coil overs are very stiff for a light car and can't be changed for lighter springs. I would like much softer front and use an anti roll bar even if I have to make it myself.

A pro street narrow rear end places the coil overs very close together so the rear roll stiffness is very soft. I made a very stiff anti roll bar for rear that I can easily change the bar with various wall thickness. Works great.

Most of the cars that I cruise with use stock anti roll bars. The Chevelles with big blocks use the heavier ones and most use a rear bar too. The cars with MII fronts use the lightest bar in the front and only a very few use a rear bar. Not that it would not help some of these guys to run a rear bar.
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Old 02-17-2011, 06:04 PM
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Quote:
Originally Posted by Blazin72
Usually if a car only has one sway bar you will find one on the front before you find one in back.
I figured he was using a i beam or something of the sort, whick would probably look cluttered and messy with a sway bar.
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