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Old 08-29-2011, 12:06 PM   #1 (permalink)
mug23
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95 Suburban C1500 & C2500 suspension difference

Hello,

I have a 95 C1500 Suburban and I'm wondering what is the suspension difference between mine and the C2500? Is the front coil spring taller and thicker on the C2500 and more leafs on the rear suspension?

If I want to convert my C1500 to a C2500, would it be easy and therefore I can tow heavier? Or should I just leave it as it is and do some upgrades in hoping to be able to tow a 24' enclosed car trailer without worries?

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Old 08-30-2011, 01:05 PM   #2 (permalink)
mug23
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Anyone here have any input to help me out?

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1995 Suburban C1500 6.5 TD VIN F
  • WarpSpeed/Diamond Eye 4" turbo back exhaust
  • WarpSpeed 2.5" crossover pipe
  • K47 air box
  • Vacuum pump delete
  • Moneyslave/ebay Bosch new injectors
  • bumper mount PMD with home made wiring loom
  • cko HX40WII with racedaymechanic downpipe kit

2005 Subaru WRX STi race ready!!!
1987 Porsche 944 Cup racer
1999 Audi A4 Advant daily driver
1993 Suzuki GSXR 600 <-- For Sale
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Old 08-30-2011, 01:39 PM   #3 (permalink)
TankerCadaver
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It may take more than an hour for some of the experts to respond

I have a '96 K2500 Sub' and it uses torsion bar front suspension. If I remember correctly, the torsion bars on the 2500 are larger and most of the front suspension is beefier (a-arms and the like).

Not sure about the rear but given that it's a leaf pack, you may be able to upgrade that pretty easily.

Hope this helps a little... I'm sure you'll get some responses soon.
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266,000 miles............................................. ...................................F - Engine
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Old 08-30-2011, 01:47 PM   #4 (permalink)
mug23
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Thank you for your reply. I post it yesterday sometime in the afternoon and didn't get any response for the whole day so I bump it up.

Ya, the K series and the C series front suspension is different that mine uses coilover springs. If I can tow around close to 8K lbs with my current stock setup, I have no problem with that. I'm just always on the look out for more upgrades...
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1995 Suburban C1500 6.5 TD VIN F
  • WarpSpeed/Diamond Eye 4" turbo back exhaust
  • WarpSpeed 2.5" crossover pipe
  • K47 air box
  • Vacuum pump delete
  • Moneyslave/ebay Bosch new injectors
  • bumper mount PMD with home made wiring loom
  • cko HX40WII with racedaymechanic downpipe kit

2005 Subaru WRX STi race ready!!!
1987 Porsche 944 Cup racer
1999 Audi A4 Advant daily driver
1993 Suzuki GSXR 600 <-- For Sale
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Old 08-30-2011, 02:35 PM   #5 (permalink)
chefmike
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I will trade you all the suspension off my 2500: just come on down and swap it all out and it is yours!

I bet the 1500 rides a little better. Mine is pretty stiff.
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Old 08-30-2011, 02:42 PM   #6 (permalink)
mug23
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Quote:
Originally Posted by chefmike View Post
I will trade you all the suspension off my 2500: just come on down and swap it all out and it is yours!

I bet the 1500 rides a little better. Mine is pretty stiff.
Really??? Is it that bad? What shocks do you have? If the ride is bad, maybe I would stay away from thinking about it?
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1995 Suburban C1500 6.5 TD VIN F
  • WarpSpeed/Diamond Eye 4" turbo back exhaust
  • WarpSpeed 2.5" crossover pipe
  • K47 air box
  • Vacuum pump delete
  • Moneyslave/ebay Bosch new injectors
  • bumper mount PMD with home made wiring loom
  • cko HX40WII with racedaymechanic downpipe kit

2005 Subaru WRX STi race ready!!!
1987 Porsche 944 Cup racer
1999 Audi A4 Advant daily driver
1993 Suzuki GSXR 600 <-- For Sale
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Old 08-30-2011, 02:51 PM   #7 (permalink)
TankerCadaver
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Quote:
Originally Posted by mug23 View Post
Thank you for your reply. I post it yesterday sometime in the afternoon and didn't get any response for the whole day so I bump it up.

Ya, the K series and the C series front suspension is different that mine uses coilover springs. If I can tow around close to 8K lbs with my current stock setup, I have no problem with that. I'm just always on the look out for more upgrades...
Sorry.... "I R An Idiot" and I didn't read the post times correctly

I will concur with another poster... the 3/4 ton is a stiff ride. My Sub' w/ a full fuel load, luggage, etc. and 3 boys in the back rides nice but when it's just me in the truck it's stiff.

Perhaps there's an overload spring you can add in the back to help when towing a heavier load?
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1996 GMC K2500 Suburban - 6.5L Turbo Diesel - 4x4 - 3/4 Ton - 8 Lug - SLT
266,000 miles............................................. ...................................F - Engine
K&N 1046 Cone Filter.................................................. .................BF Goodrich LT285/75/R16 All Terrains
Isspro Boost Gauge + Triple Pillar Pod
..........................................Heath TurboMaster
PLX Devices - Kiwi WIFI OBD2 transmitter
.....................................Devtoaster - Rev OBD2 Diagnostic iPhone software
Remote mount PMD (#9 Resistor)......................................... .........DuraMax Fan
Hayden HD Fan Clutch............................................ .....................Vac' Pump Delete
Pensacola Diesel Remote PMD/Harness.......................................SS_D iesel Fuel Filter Manager
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Old 08-30-2011, 04:03 PM   #8 (permalink)
97K3500
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not sure why you would have to worry about the front suspension for more towing capacity. you should have leaves in the back, so assuming the spring lengths are the same. it should be pretty easy. im helping my friend do a 1 ton swap on his tahoe right now and so far its pretty easy
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Old 08-30-2011, 04:12 PM   #9 (permalink)
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i am not 100% sure but i would think you can change springs and swap to the 3/4 ton knuckles/spindles for the front, on the 4wd version everything is different so it is not that easy, for the rear just swap leaves and bolt in a 10.5" 14 bolt full floater and you then will have all the same bolt pattern and be pretty decent for pulling, what trans do you have? i would think the 4L80e being a diesel, the 1/2 ton gasser got the 4L60e and is not a good choice in stock form for pulling
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Old 08-30-2011, 09:20 PM   #10 (permalink)
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The rear springs may be a different length and width. Both of these can cause fitment issues. What about the gear ratio? I would recommend at least a 3.73. The 3/4 ton has the 14 bolt full floater. The semi-floater is good if you have that. If it's a 10 bolt, you may want to swap that out too.

The front suspension doesn't matter quite so much, as long as you're not using an equalizing hitch. Then it does matter. Stiffer springs can be installed, although the stock 3/4 ton springs may not be what you need.

Finally, look at the brakes. The 3/4 ton rear brakes came in several varieties. The heavy duty brakes used a wide, larger diameter drum and work well when properly adjusted. These may not bolt onto the 1/2 ton axle easily. Just something to think about...

Jake

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