Choosing the Proper Input Shaft:
There are currently over 20 different Atlas input shafts in production today, varying in length and spline count. To completely understand your particular need when it comes to Atlas inputs first you have to look to the transmission that it will be mating to, and if any special adapters will be needed. Below is a list of the most popular transmissions currently being used today and the requirements for mating up to the Atlas. If your application is not listed below, it does not necessarily mean that we don’t have anything for you, it just may take a little more work to make it happen and will require call for further assistance.
Jeep Transmissions
| Make | Model | Config | Speeds | Output Splines | Adapter Required | Adapter Number | Input Spline Required |
| JEEP | T98 | 4wd | 4 | 6 | Yes | 50-7503 | Jeep 23 Spline |
| JEEP | T18 | 4wd | 4 | 6 | Yes | 50-7502 | Jeep 23 Spline |
| JEEP | T4 | 4wd | 4 | 23 | No | Stock OEM | Jeep 23 Spline |
| JEEP | SR4 | 4wd | 4 | 23 | No | Stock OEM | Jeep 23 Spline |
| JEEP | T5 | 4wd | 4 | 23 | No | Stock OEM | Jeep 23 Spline |
| JEEP | T176 | 4wd | 4 | 23 | No | Stock OEM | Jeep 23 Spline |
| JEEP | AX4 | 4wd | 4 | 21 | No | Stock OEM | Jeep 21 Spline |
| JEEP | AX5 | 4wd | 5 | 21 | No | Stock OEM | Jeep 21 Spline |
| JEEP | AX15 | 4wd | 5 | 23 | No | Stock OEM | Jeep 23 Spline |
| JEEP | NV3550 | 4wd | 5 | 23 | No | Stock OEM | Jeep 23 Spline |
| JEEP | NSG370 | 4wd | 5 | 23 | No | Stock OEM | Jeep 23 Spline |
| JEEP | BA10/15 Peugeot | 4wd | 5 | 21 | No | Stock OEM | Jeep 21 Spline |
| JEEP | AW4 | 4wd | 4 | 21 or 23 | No | Stock OEM | Jeep 21 Spline or Jeep 23 Spline |
| JEEP | Torqueflie 727 | 4wd | 3 | 23 | No | Stock OEM | Jeep 23 Spline |
| JEEP | Torqueflie 999 | 4wd | 3 | 23 | No | Stock OEM | Jeep 23 Spline |
| JEEP | 42RLE | 4wd | 4 | 23 | No | Stock OEM | Jeep 23 Spline (Short for 42RLE) |
| JEEP | 5-45RFE (2004 ZJ with 4.7L) | 4wd | 4 | 23 | No | Stock OEM | Jeep 23 Spline (Long) |
| JEEP | A580 (NAG1) 2012-18 auto | 4wd | 5 | 26 | No | Stock OEM | Jeep 26 spline |
GM Transmissions
| Make | Model | Config | Speeds | Output Splines | Adapter Required | Adapter Number | Required Spline |
| GM | SM420 | 2wd or 4wd | 4 | 10 | Yes | 50-9702 | Jeep 23 Spline |
| GM | SM465 | 4wd | 4 | 10 | Yes | 51-9807 | GM 10 Spline |
| GM | SM465 | 2wd | 4 | 35 | Yes | 51-9807 | Gm 35 Spline |
| GM | NV4500 | 4wd | 5 | 32 | Yes |
51-0205A & |
GM 32 Spline or GM 32 Spline (Heavy Duty) |
| GM | Powerglide | 2wd | 2 | 27 | Yes | 50-9200 | GM 27 Spline |
| GM | TH350 | 2wd | 3 | 27 | Yes | 50-6802 | Jeep 23 Spline |
| GM | TH350 | 4wd | 3 | 27 | Yes | AS-6800 | GM 27 Spline |
| GM | TH400 | 2wd | 3 | 32 | Yes | 51-6400 | GM 32 Spline or GM 32 Spline (Heavy Duty) |
| GM |
TH400 1.5" shaft stickout TH400 2.5" shaft stickout |
4wd | 3 | 32 | Yes |
GM 32 Spline or GM 32 Spline (Heavy Duty)
|
|
| GM | 700R4 | 2wd | 4 | 27 | Yes | 50-9102 | GM 27 Spline |
| GM | 4L60 | 2wd | 4 | 27 | Yes | 50-9102 | GM 27 Spline |
| GM | 4L80 & 4L80E | 4wd | 4 | 32 | Yes |
AS-6450 2SP AS-6455 4SP |
GM 32 Spline or GM 32 Spline (Heavy Duty) |
| GM | 700R4 | 4wd | 4 | 27 | Yes | AS-9111 | GM 27 Spline |
| GM | 4L60 | 4wd | 4 | 27 | Yes | AS-9111 | GM 27 Spline |
| GM | 4L60E | 2wd | 4 | 27 | Yes | 50-0404 | Jeep 23 Spline |
| GM | 4L60E | 4wd | 4 | 27 | Yes | AS-9111 | GM 27 Spline |
| GM | 4L60E (with removable bellhousing) | 2wd | 4 | 27 | Yes | 50-0430 | Jeep 23 Spline |
| GM | 4L60E (with removable bellhousing) | 4wd | 4 | 27 | Yes | 50-9300 | Custom 23 Spline (for short 4L60E Adapter) |
| GM | 4L60E (with removable bellhousing) | 4wd | 4 | 27 | Yes |
50-0405 & |
GM 27 Spline |
| GM | 6L80 GM Auto | 4wd/2wd | 6 | 32 | Yes | 50-9600 | 32 spline |
| GM | 6L90 GM Auto | 4wd | 6 | 29 | Yes | 50-9600 | 29 spline |
| GM | 8L90 Gm Auto | 4wd | 8 | 32 | Yes | AS-8603 | 32 spl. (Atlas is GM case unit) |
Ford Transmissions
| Make | Model | Config | Speeds | Output Splines | Adapter Required | Adapter Number | Input Spline Required |
| FORD | T98 | 2wd or 4wd | 4 | 31 or 28 | Yes | 50-7503 | Jeep 23 Spline |
| FORD | T18 | 2wd or 4wd | 4 | 31 or 28 | Yes | 50-7500 | Jeep 23 Spline |
| FORD | T19 | 2wd or 4wd | 4 | 31 or 28 | Yes | N/A | Jeep 23 Spline |
| FORD | NP435 | 2wd or 4wd | 4 | 31 or 28 | Yes | 50-3801 | Jeep 23 Spline |
| FORD | ZF | 4wd | 5 | 31 | No | Stock OEM | Ford 31 Spline |
| FORD | C4 (1966-1977 Bronco Only) | 4wd | 3 | 28 | No | Stock OEM | Ford 28 Spline |
| FORD | C4 | 4wd | 3 | 31 or 28 | Yes | 50-8100 | Jeep 23 Spline |
| FORD | C4 (short style manual valve body) | 4wd | 3 | 31 or 28 | Yes | 50-2905 | GM 27 Spline |
| FORD | AOD | 4wd | 4 | 31 | No | Stock OEM | Ford 31 Spline |
| FORD | C6 | 4wd | 3 | 31 | No | Stock OEM | Ford 31 Spline |
| FORD | 6R80 | 4wd | 6 | 31 | Yes | 50-3900 | Short 31 spl input |
| FORD | 10R80 | 4wd | 10 | 31 | Yes | 50-3900 | Short 31 spl input |
Dodge Transmissions
| Make | Model | Config | Speeds | Output Splines | Adapter Required | Adapter Number | Input Spline Required |
| DODGE | NV4500 | 4wd | 5 | 23 | No | Stock OEM | Jeep 23 Spline |
| DODGE | NV4500 | 4wd | 5 | 29 | No | Stock OEM | Dodge 29 Spline or Dodge 29 Spline (Heavy Duty) |