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Home made subframe connectors

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Old Dec 24, 2005 | 11:25 PM
  #1  
camaro25thrs's Avatar
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From: il
Car: 87 iroc
Engine: 350
Transmission: 700r4
Home made subframe connectors

I was wondering if u guys that made subframe connectors made the spohn kind or like Alston SFC's, also how hard was it ? Also so if u guys got pics of ur sfc's that would be cool.
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Old Dec 27, 2005 | 06:10 PM
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From: Great Lakes State
Car: 89 gta ws6, Dodge Turbo Diesel, H-D
Engine: 383 4-bolt #638 block
Transmission: 700r4, corvette servo, 2200 stall
Axle/Gears: 3.27 9 bolt b-w, pbr discs
SFCs

I seen What you are referring to on this site somewhere, try doing a search
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Old Dec 27, 2005 | 09:11 PM
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Kevin91Z's Avatar
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
This is what my dad did on his car:

http://para.noid.org/~thresher/images/albums/033101/

I have Alstons on my car:

http://para.noid.org/~thresher/image...0/DCP_0020.JPG
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Old Dec 27, 2005 | 11:55 PM
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AlkyIROC's Avatar
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Mine are closer to the Alston design. At least in the location of mounting. They actually join the subframes together.

In picture DCP_0193.JPG, you can see the rocker panel style is mounted on the outside of the LCA mount. The subframe is towards the inside. Now the third gen doesn't really have true subframes. It's all just sheet metal however the points that look like subframes are multiple sheets of metal to provide the stiffness. Mounting SFC somewhere other than on the subframes isn't properly tying them together although they will work.
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Old Dec 28, 2005 | 09:18 AM
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Vader's Avatar
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Kevin,

Is that a 9" housing I see under that red car? It's a little tough to see clearly with the driveshaft and exhaust in the way.
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Old Dec 30, 2005 | 09:23 AM
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Kevin91Z's Avatar
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
No, both my dad and I have 9-bolt rear ends.

At that time, I probably still had the 3.42 10-bolt the car came with.
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Old Dec 30, 2005 | 10:49 AM
  #7  
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Originally posted by Kevin91Z
No, both my dad and I have 9-bolt rear ends.

At that time, I probably still had the 3.42 10-bolt the car came with.
Oh. It seems that two generations of your family and I have the same problem. I've found a couple places that are carrying SOME parts for the axles again, other than the used take-outs at www.9-bolt.com.

http://www.reiderracing.com/gm734.htm

http://www.ringpinion.biz/index.php/...de5117d8451d3d
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