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Author Topic: 99 GMC 3500HD 5.9 Cummins 9 speed  (Read 13939 times)

fabman72

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99 GMC 3500HD 5.9 Cummins 9 speed
« on: October 01, 2011, 07:01:43 PM »

Hi guys .I have a Hd3500 15,000 gvw and im putting in a 5.9 cummins and a 9 speed eaton trans and a Kodiak rearend and a rear air ride from a Freightliner ambulance i'm also going to put the front springs and front shackles from the kodiak under the front and am going to make up a air ride setup for it also i also raised the rear 5" to match up with the front springs from the Kodiak the truck will have the larger 8 lug aluminum wheels from the kodiak i just need to buy a set of adapters for the front and later i will be changing out the solid front axle to a dana 60 or 70 anyhow thats a start i will have a few pictures shortly.wish me luck!!!
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ED-NY

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #1 on: October 01, 2011, 07:40:14 PM »

fabman72

Welcome to the forum..sounds like you have your work cut out. I'm sure the pictures will be coming!

Ed
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fabman72

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #2 on: October 01, 2011, 08:28:33 PM »

Thanks Ed here is some of the things i have done it is getting close to being done

Spring comparison

Kodiak springs cut

Re-drilled axle for new springs

U-bolt Comparison

Kodiak rearend mounted with air ride
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Raymo

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #3 on: October 02, 2011, 02:03:59 PM »

I'm officially jealous  8)

At least I get to live my dreams of air ride vicariously through your build  ;D
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'94 3500-HD, Cummins, Getrag, NP205. Shortend rear frame with a Pickup Bed. Dana 60 front, stock 80 rear.

'03 2500-HD 8.1 and Allison

fabman72

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #4 on: October 02, 2011, 08:17:56 PM »

I will try to not let you down !! here is some more pictures


Front spring pad


Old small panhard bar



New panhard bar

The reason i cut out the front cross member was because i had to keep the motor as low as i could to get the 9 speed under the cab.


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Raymo

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #5 on: October 02, 2011, 10:31:14 PM »

I was wondering how you were gonna fit all that trans under there  :D

What's the shackle get-up behind the bag mount on the front? For the swaybar?

Bags on the front make me nervous, but it looks like you've put a lot of thought into your setup  8)
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'94 3500-HD, Cummins, Getrag, NP205. Shortend rear frame with a Pickup Bed. Dana 60 front, stock 80 rear.

'03 2500-HD 8.1 and Allison

fabman72

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #6 on: October 02, 2011, 11:56:48 PM »

Thats the sway bar brackets that you see in the picture. here is some more.



Frame after the rearend is mounted.


Front axle almost done


new wheel adapters made




Motor mounts

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fabman72

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #7 on: October 04, 2011, 04:43:07 AM »

Here is some more pictures



Downpipe made


Dodge AC compressor


Stack tube


Air tanks


New adapted front driveshaft





Checking cab clearance



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fabman72

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #8 on: October 04, 2011, 05:02:44 AM »

Ok now on to the clutch pedal setup it is a cable setup.What i did was take a pedal from a kodiak and mount it into the HD and bolts wright in except for the mounting in the firewall i cut the cable bracket from the kodiak and mounted in the firewall here is some pictures.




Left is kodiak right is HD




Firewall mounting
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Raymo

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #9 on: October 04, 2011, 10:14:46 AM »

 ;D
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'94 3500-HD, Cummins, Getrag, NP205. Shortend rear frame with a Pickup Bed. Dana 60 front, stock 80 rear.

'03 2500-HD 8.1 and Allison

fabman72

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #10 on: October 05, 2011, 02:01:24 PM »

This is close to where i am at the moment





The stacks are just setting on it thats why they look crooked

I am now hooking up the hydraulics for the bed and steering and the wiring and Intrer-cooler.
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someotherguy

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #11 on: October 05, 2011, 04:26:15 PM »

This thing is nuts.  I love it.  It's a Baby Kodiak.  ;D

Whatcha gonna do for side steps?

And actually, I thought about it a second, and it kind of begs the question.  Why not take a Kodiak/Topkick, pull the Cat diesel, install the Cummins, and then retrofit a regular front clip (with HD filler or whatever else may be necessary) to replace the fiberglass tilt hood?

Richard
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06 Silverado ISS / 06 Silverado SS / 06 300C SRT8

Raymo

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #12 on: October 05, 2011, 08:15:32 PM »

This thing is nuts.  I love it.  It's a Baby Kodiak.  ;D

Whatcha gonna do for side steps?

And actually, I thought about it a second, and it kind of begs the question.  Why not take a Kodiak/Topkick, pull the Cat diesel, install the Cummins, and then retrofit a regular front clip (with HD filler or whatever else may be necessary) to replace the fiberglass tilt hood?

Richard

I wondered that too, then realized he's a lot like me, and that would be too easy  ;D

It really reminds me of when my truck sat about the same height, I can appreciate how big this thing is in real life!
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'94 3500-HD, Cummins, Getrag, NP205. Shortend rear frame with a Pickup Bed. Dana 60 front, stock 80 rear.

'03 2500-HD 8.1 and Allison

fabman72

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #13 on: October 05, 2011, 08:59:41 PM »

Yes i agree I do take the hard way a lot.This is kind of my reason for the build. I started moving sheds with a 95 HD with a 14' bed that i built and had the rear part of it extend 6' more in order to slide under the sheds anyhow with this truck I had the wonderful 454 and let me tell you when hauling a shed that's 12' wide and 24' long the motor did not like it about 3-4 mpg loaded and i always had problems with it over heating as long as i was not hauling sheds it never did overheat and the thing just didn't turn very sharp always had to pull up and back just to get into yards.so i decided to move up to a Kodiak .and loved the way it turns on a dime almost like a zero-turn.My biggest problem with it is the weight of it .It weighs 15,000 lbs. and most of the weight is in the front. If the front end sinks in a yard just a little I'm done ,but my problem with it is I just about wore the thing out.I am hoping to keep this truck around 10,000lbs and eventually have locking rear ends front and  back.I have learned alot from building the rollback beds on the first two trucks and am going to make this one even better. (Also i have a life saving story with my first HD. I wonder if i should start a new post for it or add it to this one.)
 Whatcha gonna do for side steps?
I have a set of saddle tanks that i am going to cut down for it.
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KODIAK

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Re: 99 GMC 3500HD 5.9 Cummins 9 speed
« Reply #14 on: October 06, 2011, 03:39:04 PM »

where did you buy your wheel adapters ? 
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