difference in Kodiak and Silverado transmissions

O

onebaddmaxxx

Active member
Feb 22, 2009
1,212
1
38
Cecil County Md
A guy has a shop next to my work, he has a Kodiak c5500 that was wrecked. He is going to scrap the truck and asked me if I wanted the transmission. Its a 2005 c5500 Kodiak, has the lly style nsbu switch on the side. I see the bell housing is different but as far as the rotating assembly is there any differences? I was gonna use the center section for a build and swap the bell housing after I had the other transmission here. Or are the valve body's or other parts different? My trucks an lly also
 
Muff

Muff

Just Learning
Oct 7, 2013
1,063
0
36
Butler, Pa
Internally its a regular allison to my knowledge yes. Like you said bellhousing is different and the kodiak we had, had a large drum e-brake on the tailhousing.
 
Mike L.

Mike L.

Got Sheep?
Staff member
Vendor/Sponsor
Aug 12, 2006
15,681
232
63
Fullerton CA
Muff said:
Internally its a regular allison to my knowledge yes. Like you said bellhousing is different and the kodiak we had, had a large drum e-brake on the tailhousing.
Click to expand...

Some of them had a different gear ratio and that will not be compatible
 
THEFERMANATOR

THEFERMANATOR

LEGALLY INSANE
Feb 16, 2009
3,890
44
48
44
ZEPHYRHILLS, FL
I believe the model with the different gear ratio was refferred to as the 2400. The bellhousing is different which is obvious. Like Mike said the extension housing is different as the MD used the larger C5 piston whereas the pickups used the GM speced extension housing with it's own C5 piston design. Most of the internals should be the same as yours, but if it's new enough it may have some of the internal improvements the 6 speeds got. At one time I had a copy of the ALLISON bulletin where they gave the serial number breakdown as to when the internals changed to the different input shaft with larger torrington bearing, and a few other changes. I think it was roughly 2/05 when the changes took place IIRC.
 
Mike L.

Mike L.

Got Sheep?
Staff member
Vendor/Sponsor
Aug 12, 2006
15,681
232
63
Fullerton CA
THEFERMANATOR said:
I believe the model with the different gear ratio was refferred to as the 2400. The bellhousing is different which is obvious. Like Mike said the extension housing is different as the MD used the larger C5 piston whereas the pickups used the GM speced extension housing with it's own C5 piston design. Most of the internals should be the same as yours, but if it's new enough it may have some of the internal improvements the 6 speeds got. At one time I had a copy of the ALLISON bulletin where they gave the serial number breakdown as to when the internals changed to the different input shaft with larger torrington bearing, and a few other changes. I think it was roughly 2/05 when the changes took place IIRC.
Click to expand...

Ferm
The changes took place somewhere around April or May in 2004. I remember calling Joe Webb at Suncoast and Transgo. I was sending pictures and measurements to both. Seems I was one of the first guys to see this in a truck.
 
THEFERMANATOR

THEFERMANATOR

LEGALLY INSANE
Feb 16, 2009
3,890
44
48
44
ZEPHYRHILLS, FL
Mike L. said:
Ferm
The changes took place somewhere around April or May in 2004. I remember calling Joe Webb at Suncoast and Transgo. I was sending pictures and measurements to both. Seems I was one of the first guys to see this in a truck.
Click to expand...
I couldn't remember the dates off the top of my head. I know they made quite a few good improvements I wish mine had in it.
 
Mike L.

Mike L.

Got Sheep?
Staff member
Vendor/Sponsor
Aug 12, 2006
15,681
232
63
Fullerton CA
The internal harness can be matched to the external. Just need to go to an Allison dealer. I gave him the info and dealer phone number just now.
 
LBZ

LBZ

Super Moderator
Staff member
Jul 2, 2007
9,905
151
63
46
B.C.
Something tells me the input was made of a different material or treated different or something and is stronger.
IIRC it was bluish in colour.

Sent from my D5803 using Tapatalk
 
S

schulte

New member
Jul 31, 2010
449
0
0
CT
LBZ said:
Something tells me the input was made of a different material or treated different or something and is stronger.
IIRC it was bluish in colour.

Sent from my D5803 using Tapatalk
Click to expand...

I've seen plenty of both the black/"blueish" and regular raw colored input shafts. Of both the first and second design. No difference in whether or not they break.
 
malibu795

malibu795

misspeelleerr
Apr 28, 2007
8,303
617
113
42
in the buckeye state
I got a SSN of the Allison that is in this.. If anyone want to run it.. 06 c5500
SN 6310632418
Date 06C29
944991_10208243385455880_4128583970860298658_n.jpg


I'm after the info.. due to the fact it has a tailshaft mounted parking brake
12401000_10208244591686035_2655275151000649542_n.jpg
 
THEFERMANATOR

THEFERMANATOR

LEGALLY INSANE
Feb 16, 2009
3,890
44
48
44
ZEPHYRHILLS, FL
Being a C6500, it is probably a 2400 series trans. The 2000/2400 had the rear mounted parking brake, the 2000 series I believe had no parking pawl in it and used a wide ratio, and the 2400 has a parking pawl with the provisions for a rear mounted parking brake, and used the same ratios as the 1000 series.
 
malibu795

malibu795

misspeelleerr
Apr 28, 2007
8,303
617
113
42
in the buckeye state
THEFERMANATOR said:
Being a C6500, it is probably a 2400 series trans. The 2000/2400 had the rear mounted parking brake, the 2000 series I believe had no parking pawl in it and used a wide ratio, and the 2400 has a parking pawl with the provisions for a rear mounted parking brake, and used the same ratios as the 1000 series.
Click to expand...

The particular one I posted is a 5500
 
You must log in or register to reply here.
Top Bottom