TK3121 1350CVx1350 Upgrade Gold Series Front CV Driveshaft for 94-99 Ram

TK3121 Torque King® 1350CVx1350 Upgrade Greaseable Front CV Driveshaft for 1994-1999 Dodge RAM Gold Series Front CV Driveshafts. Go MAX strength by upgrading the u-joints from stock 1330 size (1-1/16" cup) to beefy 1350 (1-3/16" cup)! Upgrade kit includes Greaseable 1350 Series CV U-Joints, Greaseable Booted 1350 Slip Joint, Greaseable 1350 Series Front U-Joint, 1350 Series Front Pinion Yoke, and matching small parts. Driveshaft arrives to you phased, welded, straightened, balanced, and ready to install. Assembled and finished in USA. Most component parts USA Made. Note: TK3121 has a natural finish and is ready to install right out of the box or you can paint it with your favorite finish before installation.

We customize this shaft to your specific application. Please include the truck application in the Order Notes section of the check-out process or send us an email to: sales@torqueking.com. Include the order number in the subject line.

Need More Info? Use the handy Links below to access over 40 years of Dan's product and vehicle specific Tech Notes to easily get the information you need for your vehicle's repair, maintenance, or upgrade project!

Dan the Gear Man® Tech Notes:
U-Joint Specs
U-Joint Angles
Lubrication
Pinion Yoke and Pinion Seal
Boot
Phasing
Straightening
Balanced
Matching Parts
Applications

Tech Note 1: U-Joint Specs
All three Universal Joints are made to Spicer 1350 series external snap ring dimensional specifications. The u-joint cup diameter is 1-3/16". The overall width is 3-5/8". TK3121 uses U-Joints with Hot-Forged crosses. Most U-Joint crosses are forged by one of two methods, either hot-forged or cold-forged. Cold-forged crosses are harder and more resistant to wear, but the process is costly compared to hot-forging. Most u-joints with Hot-Forged crosses are greaseable and most u-joints with cold-forged crosses are not. TK3121 uses greaseable u-joints that have a simple, single-lip seal that allows excess grease to be purged.

Tech Note 2: U-Joint Angles
On Ram 4x4 trucks with solid beam front axles, the driveshaft angle at the transfer case is greater than the angle between the driveshaft and front axle. The reason is simple, the engine, transmission and transfer case are angled down front to back several degrees. The front axle pinion is angled up. The difference can be as much as 10 degrees which is why a Double-Cardan front CV driveshaft is used. With stock suspension trucks, the CV Joint operating angle usually does not exceed about 15-16 degrees, however, with lifted trucks, the operating angle can exceed the design limits of the CV Joint. Also keep in mind the greater the angle, the less energy efficient the driveshaft is in transmitting power. As the angle increases an ever greater amount of power is used just to force the driveshaft through its rotation.
Maximum CV Joint Operating Angles for Ram Front CV Driveshafts:
1330 Series 18° 
1350 Series 32°
1410 Series 22°
1410 Series High-Angle 30°

Tech Note 3: Lubrication
TK3121 has lubrication points that can be greased with a standard grease gun. For easier greasing, all three u-joint zerks are installed in-line making it easier to locate them during servicing. Grease all lube fittings before operating the vehicle with your new driveshaft. We recommend you Lubricate the universal joint periodically with QU90018 Pyroplex® Plus Synthetic Grease or other quality, water resistant NLGI #2 GC-LB grease. Each of the 3 Universal Joints has a standard grease zerk fitting in the cross. The Slip Yoke can be lubricated through a grease fitting located on the Slip Yoke Seal. By placing the lube point in the seal, excess grease will flow down the splines before it can exit out the vent on the yoke end. The CV Center Ball can be greased with QTA9405 or similar needle nose grease gun adapter. Service intervals for the greaseable universal joints and slip joint will vary with your driving conditions and type of grease you use, but as a minimum, you should grease your u-joints at every oil change or every three months whichever comes sooner. Lube more frequently in extremely wet conditions or after submersion under water. Remember, a greaseable joint that is not regularly lubed will prematurely fail from water contamination or grease loss. So, if you and your grease gun don't get together very often, we recommend you select one of our Platinum series Driveshafts with Sealed U-Joints.

Tech Note 4: Pinion Yoke and Pinion Seal
To provide initial lubrication for the seal, put a film of clean grease on both the pinion yoke hub and seal lips.

Tech Note 5: Boot
TK3121 uses QU50233 Driveshaft Boot with Clamps. The Boot can extend Slip Joint life because it does provide a water-tight seal for the upper end of the Slip Yoke, however you still have too periodically grease the slip yoke since the Slip Yoke vent can allow water to enter the lower end of the Slip Yoke.

Tech Note 6: Phasing
Driveshafts need to be set in Phase during assembly. This means the yokes are ideally perfectly inline with each other. Our Driveshafts are made to adhere to the industry standard of +/- 2° Phase Difference or less.

Tech Note 7: Straightening
During assembly, the driveshaft parts are assembled to have the least possible runout. When a driveshaft is welded, the uneven heating and cooling of the shaft will usually cause the tube to warp slightly. We correct this by spot heating and cooling the shaft near the weld. On shafts that are not painted, you will often see a couple of round spots were the tubing is discolored by heat during the straightening process. The straighter the shaft, the less balance weights need to be used.

Tech Note 8: Balanced
Our Driveshafts are dynamically balanced on specialized driveshaft balancing equipment before shipment.

Tech Note 9: Matching Parts
Matching Parts for TK3121 1350 Front CV Drive Shaft:
QU40924 Unfinished Gold Series 1350CV x 1350 Series All Greaseable Front CV Shaft
QU90018 Pyroplex Plus Premium Synthetic Grease
QU90021 Spicer Life Ultra Premium Synthetic Grease 
TM3000 Driveshaft Service Manual
TM3317 Front CV Driveshaft Manual for 1999-2002 Dodge Ram 2500, Ram 3500
S9978 Medium Strength Threadlocker
QTA9405 Grease Gun Adapter for CV Grease Fitting

Applications
Dodge:
Customized to fit Ram 2500 and Ram 3500 Trucks: 1994, 1995, 1996, 1997, 1998, 1999