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

Spohn SFC Install on Dual Cat Car (pic post - long)

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Old Nov 25, 2002 | 12:09 AM
  #1  
Schultzy89GTA's Avatar
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From: Damascus, OR, USA
Car: 1989 GTA
Engine: 383 Miniram AFR195
Transmission: Tremec TKO
Axle/Gears: BW 9 Bolt/3.70
Spohn SFC Install on Dual Cat Car (pic post - long)

Well my schedule cleared up this weekend so I headed off to Skamokawa Friday night. I got to the Duck Inn at about 10pm and met Brandon (Chevymad) and his wife Debbie. There was a live band, good friends... we hurt ourselves! We got a pretty late start on the project Saturday and didn't finish until about 10:30 or 11:00 pm. After that we took her out for a test drive.

The first impression was had just pulling out of the barn. There is a very steep dip in front of the door and on the way in I had the usual flexing and creaking. None of that on the way out - it was kinda weird. The biggest surprise on the road was the ride. I have a pretty stiff suspension and then add on top of that poly bushings and spherical rod ends everywhere and I figured that the SFC's would make it that much more harsh. Surprise. The ride was smoother. It is like the suspension can now do it's job rather than the body flexing with every bump. Not sure about that - if anyone has ideas please post.

I took the car out along the Clackamas River today (hwy 224) and ran it hard through the twisties - very, very nice. About the only thing I have left to do to the suspension now is Bilstien shocks/struts.

Thanks again Brandon - not too many guys would catch themselves on fire for a friend! On to the pics...


Schultzy inspects the drivers side tube


Cleared the seats out and lifted the carpet a little just in case things got too hot. No problems.


Man at work


Note the ample clearance as brandon positions the drivers side cross member




Schultzy grinds off the pretty red powdercoat that he paid extra for! Brandon and I were both impressed with the quality of the powdercoat and with the pretty colors that it made when on fire! (doh! never got a shot of the flameage)


Rodney (Hammer!) would have been so proud


Finished work



All in all they fit pretty well. The front exhaust assembly (pipes and cats) needed a little persuading to allow the passenger side sfc up above them. I put the car back on ramps this afternoon, cleaned the SFC's off a little and shot some fresh paint over the welds and then put the rubber skirts back on the GFX. Looks real clean.

-Schultzy
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Old Nov 25, 2002 | 04:52 AM
  #2  
gta324's Avatar
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
Looking GOOD!

Wonder when I can afford it.........
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Old Nov 25, 2002 | 01:58 PM
  #3  
MdFormula350's Avatar
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looks good!!
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Old Nov 25, 2002 | 02:16 PM
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From: Portland, OR www.cascadecrew.org
Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
whee, good new, the torque arm we put on is still there mike

hehe, they way my luck has been lately you might want to tighten down the TA bolts
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Old Nov 25, 2002 | 02:43 PM
  #5  
Schultzy89GTA's Avatar
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From: Damascus, OR, USA
Car: 1989 GTA
Engine: 383 Miniram AFR195
Transmission: Tremec TKO
Axle/Gears: BW 9 Bolt/3.70
Originally posted by Dewey316
whee, good new, the torque arm we put on is still there mike

hehe, they way my luck has been lately you might want to tighten down the TA bolts
LOL - Will do Dewey. It is looking pretty red under there now

-Schultzy
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Old Nov 25, 2002 | 02:52 PM
  #6  
Dewey316's Avatar
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From: Portland, OR www.cascadecrew.org
Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
yeah i need to get a TA, so i can still have more red under the car than you

hrmmm, maybe i will have to get the new springs painted red so i can make you ohhhh so evnyous.
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Old Nov 25, 2002 | 09:00 PM
  #7  
Schultzy89GTA's Avatar
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From: Damascus, OR, USA
Car: 1989 GTA
Engine: 383 Miniram AFR195
Transmission: Tremec TKO
Axle/Gears: BW 9 Bolt/3.70
Originally posted by Dewey316
yeah i need to get a TA, so i can still have more red under the car than you

hrmmm, maybe i will have to get the new springs painted red so i can make you ohhhh so evnyous.
My Eibachs are red dude. So are my sway bar bushings and end links. ...and my lca's and my panhard rod and my torque arm and my steering brace...

-Schultzy

Last edited by Schultzy89GTA; Nov 25, 2002 at 10:07 PM.
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Old Nov 25, 2002 | 10:13 PM
  #8  
5SIZ's Avatar
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From: Tucson
Car: 1987 IROC-Z
Engine: 305 TPI
Transmission: T5
looking good man!
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Old Nov 26, 2002 | 08:52 AM
  #9  
Dewey316's Avatar
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From: Portland, OR www.cascadecrew.org
Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
Originally posted by Schultzy89GTA
My Eibachs are red dude. So are my sway bar bushings and end links. ...and my lca's and my panhard rod and my torque arm and my steering brace...

-Schultzy
But i also have red sway bars, a red tranny mount, red panhard, red lca's, and red SFC's
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Old Nov 29, 2002 | 02:20 PM
  #10  
Chet's Avatar
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From: Upstate NY
Car: GTA
Engine: L98
Transmission: 700R4
Looks good LMAO at the first pic though....
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Old Dec 4, 2002 | 12:41 PM
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From: Fort Wayne,In
Car: 1989 Formula 350
Engine: 355 HSR
Transmission: Rossler 700R4
Axle/Gears: 9 bolt/3.27
looks great!! Where did you get that crossmember at?
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Old Dec 4, 2002 | 12:47 PM
  #12  
Dewey316's Avatar
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From: Portland, OR www.cascadecrew.org
Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
it is the spohn cross member, it comes with the spohn TA.
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Old Dec 4, 2002 | 02:51 PM
  #13  
Schultzy89GTA's Avatar
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From: Damascus, OR, USA
Car: 1989 GTA
Engine: 383 Miniram AFR195
Transmission: Tremec TKO
Axle/Gears: BW 9 Bolt/3.70
^
^
^ What he said!

-Schultzy
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Old Dec 4, 2002 | 03:44 PM
  #14  
Synapsis's Avatar
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From: Tucson - MdFormula350 = Post uberWhore
Car: Sexy
Engine: Stock
Transmission: Slipping
So I assume that the Spohn SFCs are available now? *whips out his credit card*
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Old Dec 4, 2002 | 08:02 PM
  #15  
Schultzy89GTA's Avatar
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From: Damascus, OR, USA
Car: 1989 GTA
Engine: 383 Miniram AFR195
Transmission: Tremec TKO
Axle/Gears: BW 9 Bolt/3.70
Originally posted by Synapsis
So I assume that the Spohn SFCs are available now? *whips out his credit card*
(insert best Ed McMahon voice here)

You are correct sir!

-Schultzy
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Old Dec 4, 2002 | 10:26 PM
  #16  
Momar's Avatar
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Umm...... Do your doors still shut properly? Do you realize that you are suposed to have the suspension loaded when you weld on the subframe connectors? I am pretty sure that it should have said that in the papers you got with the connectors.

Ben
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Old Dec 4, 2002 | 11:48 PM
  #17  
Schultzy89GTA's Avatar
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From: Damascus, OR, USA
Car: 1989 GTA
Engine: 383 Miniram AFR195
Transmission: Tremec TKO
Axle/Gears: BW 9 Bolt/3.70
ummmm... yes they shut fine and the suspension was fully loaded.

thanks for your concern.

-Schultzy (not quite as dumb as I look thank goodness)
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Old Dec 5, 2002 | 12:19 AM
  #18  
chevymad's Avatar
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From: Cathlamet, Washington
Car: 87 Formula
Engine: 327
Transmission: 700r4
Axle/Gears: 3.23
The pictures dont show if very clearly.. but the front tires are on ramps. The back end is supported by jack stands under the rear axle.. The springs are carrying all the cars weight so YES the suspension is loaded.
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Old Dec 5, 2002 | 07:26 AM
  #19  
Momar's Avatar
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Ok, thats cool. I just thought it looked like the suspension was haning. Looks like you did a good job.

Ben
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Old Dec 5, 2002 | 11:19 AM
  #20  
CDN_87IROC's Avatar
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From: CA
My car is just a shell right now and I would like to install SFC's and then repaint the underside of the car ... Can we hear from someone who installed SFC's without the cars weight loaded? ... any horror stories on doors not shutting? Hood or hatch alignment out?
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