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

In need of a longer bump stop

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Old Nov 15, 2012 | 05:33 PM
  #1  
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From: Central New York
Car: 1988 camaro base coupe
Engine: 305 LO3
Transmission: gm 700-r4
In need of a longer bump stop

heres my issue

if i hit a large enough bump the tire will hit the lip of the fender, i have kyb agx shocks in the back and have them as stiff as they will go, i also have a few rubber springs spacers in but im still having the same problem. anyone know were i can get slightly longer bump stops?
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Old Nov 16, 2012 | 04:21 PM
  #2  
//<86TA>\\'s Avatar
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Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: In need of a longer bump stop

Better fitting wheels?

you can unbolt the factory stops, make some spacers as long as you need them and bolt back on, but its a band aid for for another problem.

What size are the tires? Are they stock height?
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Old Nov 16, 2012 | 09:51 PM
  #3  
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Re: In need of a longer bump stop

Looks like ya got a mismatch there son...

Base-model no-option non-performance car w 4th gen rear w the OE teeny tiny 3rd gen 15" wheels on it?

Regardless of the details of the mismatch, the solution is to cure the mismatch, not hack something to "compensate" for it.
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Old Nov 17, 2012 | 11:21 AM
  #4  
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From: Central New York
Car: 1988 camaro base coupe
Engine: 305 LO3
Transmission: gm 700-r4
Re: In need of a longer bump stop

no american racing hopster wheel, previous owner bought the wheels and the offset isnt quite right,
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Old Nov 17, 2012 | 12:16 PM
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Re: In need of a longer bump stop

Bets thing to do then is fix the stupid wheel choice problem; not hack on the car to force it to submit to the idiot's mistake. Be smarter than .... that.
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Old Nov 17, 2012 | 02:55 PM
  #6  
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Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: In need of a longer bump stop

another angle, if you change the bump stop location, you will loose some suspension travel and depending on conditions slamming the bumpstop can cause you to lose control.
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Old Nov 17, 2012 | 05:13 PM
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Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: In need of a longer bump stop

Originally Posted by //<86TA>\\
another angle, if you change the bump stop location, you will loose some suspension travel and depending on conditions slamming the bumpstop can cause you to lose control.
Going off of that, are the springs old, new springs that are cut or lowering springs? I would get different wheels personally. You can get used wheels from a fourth gen or corvette for cheap now a days. Chicago craigslist has them with decent tires for $400-600 all day. just an example. I think there are two sets on our classifieds right now. Just use spacers and make sure the tire sidewall matches the overall wheel size.
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Old Nov 18, 2012 | 02:26 PM
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Car: 92 Lingenfelter Z28 articwhite
Engine: Aluminum 615BBC
Transmission: Th400wbrake/curri entps9" locker
Axle/Gears: 4.11/4.30/4.56
Re: In need of a longer bump stop

longer bump stops.. check out lakewood, they have them. you will make the plate they will bolt to.. almost 3inch tall.

you can also roll your fender lip. tool wll rent for $50.

or you can go with a smaller tire like alot of the street drivers do. like a 275 60 15.
its whats on my ss truck all the way around.
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Old Nov 21, 2012 | 04:21 PM
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Re: In need of a longer bump stop

Does it look like this on both side? If it's only like that on the driver's side, you need an adjustable panhard bar. If it looks that way on both sides, I would say that you need to roll your fenders, change your bump stops, or change your wheels.
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Old Nov 23, 2012 | 02:57 PM
  #10  
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Re: In need of a longer bump stop

I actually had a very complex setup where I used Koni shaft style progressive bumpstops on my rear Konis and rode on them once I got 1 1/8" travel. It is very complex to get into the entire setup I did on that car but I had to shim them to get the height I wanted witht he progressive wheel rate I desired. I also combined all of this with a massive rear 25mm swaybar, Koni Yellows on full rebound, and progressive rate rear coils. TO keep the rear from leaping out on you in mid steadystate, the car was setup to induce massive roll understeer with trailing arms almost 1 " shorter than stock and a massive rodend on the front torque arm to handle the strain

But yes I rode on bumpstops in corners on purpose with the Koni 3" tall progressive units and I never got more than about 2 1/4" total travel out of the rear suspension at any time.
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Old Nov 23, 2012 | 03:58 PM
  #11  
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From: Spokane WA
Car: 92 Lingenfelter Z28 articwhite
Engine: Aluminum 615BBC
Transmission: Th400wbrake/curri entps9" locker
Axle/Gears: 4.11/4.30/4.56
Re: In need of a longer bump stop

well... keeping it simpl.

i would bet your pasngr side is tucked in a bit more then the side shown.

and a adjustbl pan rod would do alot to fix the prob you have

rolling the fender would fix anything the pan rod left over.

i would look close at a adjsbl pan rod. first.
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Old Dec 3, 2012 | 03:33 PM
  #12  
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From: Aloha, Oregon
Car: '91 Camaro Z28, '85 Camaro Z28
Engine: LB9, LB9
Transmission: T5, 700r4
Axle/Gears: Eaton 3.73 Posi, 3.23 Posi
Re: In need of a longer bump stop

Roll the fenders...
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