Oversteer with Global West LCAs - Chevy Impala SS Forum
 
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post #1 of 7 (permalink) Old 03-15-2004, 03:14 PM
yellowcar72
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Ive seen a couple of posts in the past about oversteer with GW LCAs and wanted to run my combo by everyone for some opinions. I am running the stock SS springs and Bilstein shocks and want run an HA front bar i have in the garage from an earlier project. Should i consider a smaller rear bar than the HO to balance the car?
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post #2 of 7 (permalink) Old 03-15-2004, 03:22 PM
cire70
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I have the stiffer Bilsteins with the GW LCAs and stock bars...I have no oversteer! [img]smile.gif[/img] I'd think that if you got the HA rear bar, you'd want an F body front bar from a 77 F body. I've heard that's a great combo.

Eric
post #3 of 7 (permalink) Old 03-16-2004, 03:20 PM
scot august
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I just finished installing a 1 1/2 inch front bar on a mostly stock SS with a 1 1/2 inch rear bar. Required welding a front frame brace between the frame rails, just a piece of steel above were the old sway bar mounted. New one uses a spacer that lowers it to make room for the brace and allow a shorter bar with fewer bends. First front bar I've seen that actually balances a 1 1/2 rear bar in roll stiffness. For a OEM frame with few suspension mods, I am impressed. Car corners neutral and dead flat.
 
post #4 of 7 (permalink) Old 03-16-2004, 04:36 PM
Rustic
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Quote:
Car corners neutral and dead flat.
I'd sure like to see a pic of this "dead flat" cornering. What springs and shocks do you have? My car corners pretty flat on the street... but when I'm really pushing at the track it just doesn't happen... however my car handles very well and very neutral... which is what I was after. I do not have oversteer or understeer with my combo of 1.25 front and 1.5 rear bars.

I think I'll try a stiffer spring up front now and see how that effects the combo.
post #5 of 7 (permalink) Old 03-16-2004, 05:33 PM
AutocroSSer
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Chris : From seeing those pics, I'd guess you are pretty much undersprung (mostly up front) AND undershocked (all-around) for what you're trying to do there. Swaybars are nice, but they aren't the cure-all either [img]smile.gif[/img] .

And yes, you'll notice that the car oversteers more with the GW rear arms (conversely, requiring less rear bar) than with any of the other arms available. This is mostly a function of the bushing design. A better posi (i.e. Torsen) also accentuates this.....you'd be surprised how mild my rear suspension setup (springs/bar) is now!
post #6 of 7 (permalink) Old 03-17-2004, 02:47 AM
yellowcar72
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Actually im surprised that these cars can use so much rear bar. Ive built an F body and an A body with Global West front suspension parts and he prefers to run no rear bar at all. Im also looking into a Torsen rear diff in the future so that puts another twist in my plans.
post #7 of 7 (permalink) Old 03-17-2004, 10:02 AM
Rustic
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Quote:
From seeing those pics, I'd guess you are pretty much undersprung (mostly up front) AND undershocked (all-around) for what you're trying to do there. Swaybars are nice, but they aren't the cure-all either
I agree completely with you here Ed. I'm not going to do much more with the SS because I'm building the 95 to handle the corners. I'll be going mild with the sway bars and wild with the springs and shocks.
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