Transfer case questions
#1
10-09-2015, 07:27 PM
Transfer case questions
I need to find a transfer case for my 94 2500. I've seen a few used ones online reasonably priced but need to get a little more before I buy.
Do all the 241 HD'S have the 29 spline input no matter which tranny they were behind?
What's the difference between the light duty 241 and the heavy duty? I'm assuming the gm 241's were the same as the dodge light duty and I've worked the hell out of alot of gmt400's without a transfer case failure. Just wondering if the light duty would hold up in a truck that only sees 1500 miles a year.
Thanks for the help
Do all the 241 HD'S have the 29 spline input no matter which tranny they were behind?
What's the difference between the light duty 241 and the heavy duty? I'm assuming the gm 241's were the same as the dodge light duty and I've worked the hell out of alot of gmt400's without a transfer case failure. Just wondering if the light duty would hold up in a truck that only sees 1500 miles a year.
Thanks for the help
#2
10-10-2015, 04:53 AM
Diesel Bomber
Not sure if this helps but I found this:
In 1988, GM began using the NP241 transfer cases. Most of these units will be right hand drop, but Chevy also used a few left hand drop applications. The Chevy NP241 is supplied with a 27 spline female input or a 32 spline female input. With a T350, 4L60E or 700R4 tranny, it will be 27 spline. With a T400 or 4L80E trans or 5 speed, it will be 32 spline."
This is from another source:
NP241 / NP241D / NP241HD
Manufacturer: New Process Gear
Number of speeds: Two
High: 1:1
Low: 2.72:1
Case (or housing) material: Aluminum
Front output drive type: Chain (driver or passenger side drop)
Availability or aftermarket parts and support: Medium
Input spline count: 23, 27, 29, 31 and 32
Rear yoke: Slip
Planetary gear: Yes (six-pinion)
Flange or slip yoke eliminator available: Yes
Shifter type: Mechanical
Commonly found in: '89-and-newer GM 1/2 & 3/4 ton trucks & SUVs, '88-and-newer Dodge 1/2-&-3/4-ton trucks.
In 1988, GM began using the NP241 transfer cases. Most of these units will be right hand drop, but Chevy also used a few left hand drop applications. The Chevy NP241 is supplied with a 27 spline female input or a 32 spline female input. With a T350, 4L60E or 700R4 tranny, it will be 27 spline. With a T400 or 4L80E trans or 5 speed, it will be 32 spline."
This is from another source:
NP241 / NP241D / NP241HD
Manufacturer: New Process Gear
Number of speeds: Two
High: 1:1
Low: 2.72:1
Case (or housing) material: Aluminum
Front output drive type: Chain (driver or passenger side drop)
Availability or aftermarket parts and support: Medium
Input spline count: 23, 27, 29, 31 and 32
Rear yoke: Slip
Planetary gear: Yes (six-pinion)
Flange or slip yoke eliminator available: Yes
Shifter type: Mechanical
Commonly found in: '89-and-newer GM 1/2 & 3/4 ton trucks & SUVs, '88-and-newer Dodge 1/2-&-3/4-ton trucks.
#3
10-10-2015, 05:28 AM
Diesel Bomber
I need to find a transfer case for my 94 2500. I've seen a few used ones online reasonably priced but need to get a little more before I buy.
Do all the 241 HD'S have the 29 spline input no matter which tranny they were behind?
No they only came with a 29 spline input behind a 5 or 6 speed an auto uses a 23 spline input.
What's the difference between the light duty 241 and the heavy duty? I'm assuming the gm 241's were the same as the dodge light duty and I've worked the hell out of alot of gmt400's without a transfer case failure. Just wondering if the light duty would hold up in a truck that only sees 1500 miles a year.
An nv241 LD and an nv241HD would both work, differences are the chain size and output shaft size, the HD having the bigger output. These were the two options for 2nd gen dodges as for the gm units I am not sure if they are the same.
Thanks for the help
Do all the 241 HD'S have the 29 spline input no matter which tranny they were behind?
No they only came with a 29 spline input behind a 5 or 6 speed an auto uses a 23 spline input.
What's the difference between the light duty 241 and the heavy duty? I'm assuming the gm 241's were the same as the dodge light duty and I've worked the hell out of alot of gmt400's without a transfer case failure. Just wondering if the light duty would hold up in a truck that only sees 1500 miles a year.
An nv241 LD and an nv241HD would both work, differences are the chain size and output shaft size, the HD having the bigger output. These were the two options for 2nd gen dodges as for the gm units I am not sure if they are the same.
Thanks for the help
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#4
10-10-2015, 08:50 PM
