Suspension and Chassis Questions about your suspension? Need chassis advice?

Suspension Mods

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Old Jan 29, 2012 | 02:43 PM
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TPI-Formula350-'s Avatar
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From: Long Island New York
Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
Suspension Mods

I've lower my car with Hotchkis springs and I have new shocks all around. I also have SSM weld in sub frame connectors and a strut tower brace. Now I'm looking into rebuilding the front end, nothing to crazy. I found these on hawks site http://www.hawksthirdgenparts.com/ca...ebuildkit.aspx
I'm also looking into replacing the stamped metal rear end parts. I'm probably going to go with UMI Performance parts. I have there LCARB and they were a good quality and they make all there parts in the USA. I see a lot of the parts they sell are adjustable, is that really needed??? Thinking of starting with this. http://www.umiperformance.com/catalo...roducts_id=140
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Old Jan 29, 2012 | 03:10 PM
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JamesC's Avatar
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Suspension Mods

Originally Posted by TPI-Formula350-
I've lower my car with Hotchkis springs and I have new shocks all around. I also have SSM weld in sub frame connectors and a strut tower brace.
You might consider after market strut mounts with spherical bearings, along with the STB, to help eliminated flex.

JamesC
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Old Jan 29, 2012 | 05:23 PM
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TPI-Formula350-'s Avatar
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From: Long Island New York
Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
Re: Suspension Mods

my main question do I really need to get adjustable suspension parts, or are non adjustable just as good for the most part?
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Old Jan 29, 2012 | 05:37 PM
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Edwardgp's Avatar
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From: Washington State
Car: 1983 BB 1995 Z28 Camaro's
Engine: 454-350
Transmission: TH350-4l60e
Axle/Gears: 373 posi-Stock
Re: Suspension Mods

That's a good question I wonder what the difference is?
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Old Jan 29, 2012 | 06:31 PM
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AM91Camaro_RS's Avatar
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From: Central FL
Car: 91 Camaro
Engine: 3.1...not hardly stock
Transmission: 700r4....not stock either
Axle/Gears: 3.73
Re: Suspension Mods

depends on how much racing and how much adjusting you plan to do on the car. most likely, if you're asking this question, just get the non-adjustables. I (probably along with most others) would recommend the adjust panhard bar so that you can make sure the rear end is centered after lowering the car. otherwise, just get the non-adjustable parts. they'll be stronger than stock but will save you money over the adjustables that probably won't make much difference for you.
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Old Jan 29, 2012 | 06:33 PM
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//<86TA>\\'s Avatar
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: Suspension Mods

something else to think about is the bushings. the non adjustable pieces only have poly ends, a downgrade really, since they bind and dont let the piece articulate as it should. you wont notice this driving to work and back, but if you start pushign the car hard, the weakness will show.
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Old Jan 29, 2012 | 08:42 PM
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JamesC's Avatar
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Suspension Mods

Originally Posted by AM91Camaro_RS
I (probably along with most others) would recommend the adjust panhard bar so that you can make sure the rear end is centered after lowering the car.
If the rear isn't squared, adjustable LCA's can correct the issue. That said, most rear ends are probably in spec. Mine's a bit off and since I'm **** in such matters, I'll throw in some BMR's come spring.

JamesC
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Old Jan 29, 2012 | 11:25 PM
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Reid Fleming's Avatar
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From: Houston, TX
Car: 1989 GTA
Engine: SuperRam 350
Transmission: Pro Built S/S TH700R4
Axle/Gears: 3.27
Re: Suspension Mods

Originally Posted by //<86TA>\\
something else to think about is the bushings. the non adjustable pieces only have poly ends, a downgrade really, since they bind and dont let the piece articulate as it should. you wont notice this driving to work and back, but if you start pushign the car hard, the weakness will show.
86TA pretty much said it. The benefits of the adjustable pieces are more about having the better bushing setup. The non adjustable will be poly on both sides..... The adjustable ones will be poly on both, poly/spherical, poly/roto joint, spherical only, or rotojoint only.

Just because it's adjustable doesn't mean it will need to be adjusted. They'll come shipped to stock specs just like a non-adjustable piece would be.
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Old Jan 29, 2012 | 11:52 PM
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blacksunshine'91's Avatar
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From: Moorpark, CA
Car: '91 GTA, '92 T/A Convertible
Engine: GTA: 350 w/Vortec heads, T/A: 305
Transmission: Pro-built 700R4
Axle/Gears: GTA: 3.27, T/A: 2.73
Re: Suspension Mods

I think its easier to get the adjustables. That way later down the road if you do decide you need to adjust stuff you can without having to buy more parts.
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Old Jan 30, 2012 | 06:03 AM
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Car: '08 Mustang GT
Engine: 4.6L
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Axle/Gears: 8.8", 3.55
Re: Suspension Mods

Adjustables will also let you correct for inaccuracies in either manufacture or installation of relo brackets, or even in the car itself where the axle isn't now perfectly square to the centerline (or never was to begin with).

If you're going to try adjusting any 'errors' out, go into it with the thought that having patience will be at least as important as having the right size wrenches and sockets.


Norm
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Old Jan 30, 2012 | 07:37 AM
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Re: Suspension Mods

Hey guys. For the builder looking to upgrade to stronger components and for a daily driver with really no other upgrades, we usually recommend non-adjustable. For lowering, racing, tuning, perfecting, etc. we recommend adjustable. The factory tolerances mentioned can stack and make your car be out of square. Adjustables help there. And also, like mentioned above, we have to carefully consider what type of application your car is intended for when choosing bushings. An occasional/daily driver with a drag pass or two can get along fine with poly. If you're going autocrossing every weekend it would be better to get Roto's.

Regardless of your application we can get you fixed up.

ramey
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