We stock the world's most complete selection of front Double Cardan CV driveshaft parts for 1975.5 to 1993 Dodge full size 4x4 vehicles. For a little history: Part way through the 1975 model year, Dodge made a supplier switch for front Double Cardan Constant Velocity Joints used in the firm's full size 4x4s from Dana Spicer to General Motor's Saginaw Division. The new shafts retained the same size tubing as the previous shaft, but the CV Joint was GM's new, serviceable S44 Double Cardan Constant Velocity Joint. The slip joint for the new shaft was supplied by Chrysler's own Detroit Universal Division who also made the front universal joint. An interesting feature of the S44 CV head was the use of plastic injections to retain the u-joint caps instead of metal snap rings, however, the yokes are machined on the inside to accept replacement universal joints with internal c-clip cup retention. The S44 CV Joint was used unchanged all the way through the end of the 1993 model year on all Dodge and Plymouth full size 4x4s through 1 ton size. Detroit Universal supplied the slip joints for all those shafts, but there was several design changes over the years. Dodge was the last 4x4 manufacturer to utilize the Saginaw S44 CV Joint, replacing it for the 1994 model year with a Spicer type 1330 series CV joint.
The original equipment front CV driveshaft used on 1975-1/2 and all 1976 to 1993 Dodge and Plymouth full size 4x4 models used a Saginaw Double-Cardan Constant Velocity joint at the transfer case end and a slip joint mounting a Detroit Universal internal c-clip universal joint at the axle end. The CV parts remained unchanged over the entire 18 year production run, however, the slip joint will vary after 1985 and the front universal joint changed in 1993 for trucks powered by the Cummins Diesel engine.
CV MOUNTING FLANGE: The QU40761 mounting flange on Saginaw Double-Cardan CV Joints as used with original equipment 1975-1/2-1993 Dodge front CV shafts can be identified by the following features:
5" outside diameter, 4 bolt Round Flange mates to the Transfer Case Output Flange using 4 QU10806 7/16" Bolts that fit through holes in CV Flange and thread into your Transfer Case Output Flange. Note: If you have a CV mounting flange that is half-round, your driveshaft has an aftermarket Spicer type CV head.
CV CENTER YOKE: The Saginaw CV Center Yoke has squared off ends. The 1-1/8" diameter holes for the u-joints have a 3-1/4" center to center dimension. Plastic injected into grooved machined in the yokes and u-joint cups retains the factory installed universal joints. TK40725 and QU40758 replacement universal joints are kept in place by spring steel C-Clips that fit in a groove machined on each u-joint cup. When installed, the C-Clips will be against flats machined on the inside faces of the yokes. Note: If you have CV u-joints with external snap rings, your driveshaft has either been through a major rebuild or it is an aftermarket replacement driveshaft assembly.
FRONT U-JOINTS: Until 1993, the front universal joint in the slip yoke was always a dinky Detroit Universal 7260 series which has 1.078" diameter cups with internal C-Clip lockup. 7260 yokes measure 2-1/8" between the inside machined flats of the yoke. 1993 Diesel trucks (and possibly some very late 1992 models) have a larger Detroit 7290 series universal joint with 1-1/8" diameter cups and internal C-Clip retention. The inside span between the slip yoke ears will measure 2-5/8". Note: If you have a front u-joint with external snap rings, your driveshaft has either been through a major rebuild or it is an aftermarket replacement driveshaft assembly.
SLIP JOINTS: Up through January 2, 1986, the spline size for Slip Stubs and Yokes on factory assembled shafts will be a 1-1/4"-16 with an external slip yoke seal. From January 2, 1986 to March 28, 1988, several combinations can be found all of which should have a rubber protective boot. Starting on March 29, 1988 all factory front CV shafts use a 1-9/32" fine spline stub and yoke shielded by QK3078 Boot. Note: You may also find 1-3/8" 16 spline slip yokes on rebuilt or aftermarket replacement CV driveshaft assemblies.
VERIFY YOUR PARTS: Given the age of this era of Dodge trucks, it is not unusual to find non-standard components particular with the 1986 and older models with 1-1/4" diameter slip joints using a press on seal. A great many of these trucks have had the original slip joint replaced with 1-3/8" diameter 16 spline aftermarket parts. We also see a lot of shafts with internal/external snap ring conversion joints and a fair number that have replacement shafts made with Spicer style CV components (these will have a half-round CV flange). YOU MUST VERIFY what parts you have before ordering! If you are not sure you have a factory driveshaft, e-mail us some clear photos!
Original Equipment U-Joint Specs for 1975-1993 Dodge Double Cardan Front CV Driveshafts:
Slip Yoke 7260 Series: 1.078" Cup Diameter, 2-1/8" inside yoke span, Internal C-Clip, 1975-1992, 1993 Gas LD
Slip Yoke 7290 Series: 1.125" Cup Diameter, 2-5/8" inside yoke span, Internal C-Clip, 1993 Diesel or Heavy Duty
CV Joint S44: 1.125" Cup Diameter, 2-9/16" inside yoke span, Internal C-Clip, 2 used in all factory CV Joints
Aftermarket U-Joints you may find on 1975-1993 Replacement or Rebuilt Front CV Driveshafts:
Spicer 1310: 1-1/16" Cup Diameter, 3-7/32" overall width, External Snap Ring, usually in slip yoke
Spicer 1330: 1-1/16" Cup Diameter, 3-5/8" overall width, External Snap Ring, slip yoke or CV
Spicer 1350: 1-3/16" Cup Diameter, 3-5/8" overall width, External Snap Ring, slip yoke or CV
Dodge switched from slip joint seals to much more effective slip joint boots in 1986. The QK3078 Boot we carry fits some 1987 model trucks and about all the 1988 to 1993 trucks with the original driveshaft slip joint. Most Boot Protected Slip Joints will last the life of the vehicle as long as the Boot and Clamps are in good shape.
The now obsolescent Saginaw Double Cardan CV Joint used by Dodge for 1975.5 to 1993 full size 4x4 trucks was quite durable as long as the CV Centering Ball was greased every now and again. Strength wise, it is comparable to the more modern Spicer type 1330 series CV shafts used on 1994 and later Dodge Ram trucks. The simple Saginaw centering ball and socket is easier to grease, longer lasting and cheaper to repair than Spicer CV Ball that uses needle bearings especially under poor maintenance conditions. However the Spicer type CV can run at a greater angle.
Dan the Gear Man Tech Tip: The QU40817 replaceable hardened steel centering ball MUST be replaced if it shows any evidence of wear. Ideally, an expensive, specialized puller is used for removal, however you can remove the ball by carefully slitting it with a die grinder
Please refer to QU40752 page for more details and ordering information.
The original 1975.5 to 1993 Dodge front Double Cardan Constant Velocity driveshafts used a Saginaw CV Head and a Detroit Universal Slip Joint. While it is still possible to fabricate a new shaft with a Saginaw CV, cost wise, it usually makes more sense to either rebuild an original shaft or replace it with a new shaft built using Spicer Style components. We will list any rebuilt shafts we have in stock below, plus we have a heavy duty unfinished 1350 series CV shaft primarily for those you with Cummins Diesel powered trucks.
QU40924 1350x1350 Series Unfinished Heavy Duty Greaseable CV Shaft Assembly for 1975-1993 Dodge is the lowest cost way to replace your worn out Double Cardan Constant Velocity Dodge Ram 4x4 front CV driveshaft with a brand new, totally greaseable, 1-3/16" cup size CV U-Joints (1350 series) x 1-3/16" cup size front joint (1350 series) heavy duty Double Cardan Constant Velocity front driveshaft that you customize for length and complete the final assembly. The greaseable CV Head is already welded to the tube, so all you have to do is determine what length to cut the tube before finishing the assembly. The CV Flange will directly bolt to your original transfer case output flange. For the front axle, you will also need to replace your small original 7260 or 7290 series pinion yoke and hardware with 1350 series parts. More Info
An awful lot driveshaft parts are wrecked by the slam-bang methods of universal joint replacement used by most people doing driveshaft service. Your Double Cardan driveshaft components are machined to incredibly precise specifications and can be easily damaged by either poor service procedures or makeshift tools (or both). Our Driveshaft Manuals guide you through the various driveshaft service jobs using clear color photographs and detailed text.
Custom 4x4 CV Shaft Rebuild Kits for 1975-1993 Dodge 4x4's Rebuild your front constant velocity driveshaft yourself with one of these affordable yet comprehensive QUADKITS® featuring hot-forged, alloy steel, greaseable u-joints, CV Socket Rebuild Kit, and Threadlocker, plus you can order your Kit with our optional 22 Page TM3305 Front Constant Velocity Driveshaft Service Manual for 1975-1993 Dodge 4x4s featuring color exploded views and over 70 color photos.
QK3024 Custom 4x4 CV Shaft Rebuild Kit for 1993 Dodge 4x4's, Diesel or Heavy-Duty Gas with large 7290 series front u-joint. Rebuild your front constant velocity driveshaft yourself with this affordable, yet comprehensive, QUADKIT® featuring USA made hot-forged, alloy steel, greaseable u-joints with nitrile rubber seals, CV Socket Rebuild Kit, and Threadlocker. More Info
QK3020 Custom 4x4 CV Shaft Rebuild Kit for all 1975-1993 Dodge 4x4's with the small 7260 series front u-joint. Rebuild your front constant velocity driveshaft yourself with this affordable, yet comprehensive, QUADKIT® featuring USA made hot-forged, alloy steel, greaseable u-joints with nitrile rubber seals, CV Socket Rebuild Kit, and Threadlocker. More Info
Torque King® Saginaw CV Driveshaft Master Rebuild Kits for 1989-1993 Dodge 4x4 W250 and W350 trucks are for those who want only the best. These complete Master Kits feature rugged Torque King®, cold-forged, alloy steel, non-greaseable factory synthetic-lubed u-joints, CV Socket Rebuild Kit, CV Yoke Liner, Driveshaft Boot Clamps and Threadlocker, plus you can order your Kit with our optional 22 Page TM3305 Front Constant Velocity Driveshaft Service Manual for 1975-1993 Dodge 4x4s featuring color exploded views and over 70 color photos.
TK3022 Torque King® Driveshaft Master Rebuild Kits For 1975-1992 Dodge 4x4 W250 and W350 trucks with 7260 Series Front U-Joint.
TK3026 Torque King® Driveshaft Master Rebuild Kits For 1993 Dodge 4x4 W250 and W350 trucks with 7290 Series Front U-Joint. More Info
Dodge used a 1-1/4"-16 full length spline Slip Stub manufactured by Detroit Universal from mid 1975 to January 2, 1986. From that date until March 28, 1988 a different Slip Stub was used. Starting on March 29, 1988, Dodge Front CV Shafts used a 1-9/32" 29 spline based on 30 spline Stub. None of these original equipment Slip Stubs are readily available, however, one usually finds worn stub splines also mean worn yoke splines so you normally replace both the slip stub and yoke with 1-3/8" 16 spline replacement components.
Up through January 2, 1986, the spline size for Slip Stubs and Yokes on factory assembled shafts will be a 1-1/4"-16 with an external slip yoke seal. From January 2, 1986 to March 28, 1988, several combinations can be found all of which should have a rubber protective boot. Starting on March 29, 1988 all factory front CV shafts use a 1-9/32" fine spline stub and yoke shielded by QK3078 Boot. Given the age of this era of Dodge trucks, it is not unusual to find non-standard components particularly with the 1986 and older models with 1-1/4" diameter slip joints using a press on seal. A great many of these trucks have had the original slip joint replaced with 1-3/8" diameter 16 spline aftermarket parts. We also see a lot of shafts with internal/external snap ring conversion joints.
QK3012 Dodge 7260 Series Driveshaft Slip Yoke Kit Each kit includes yoke, u-joint, seal strap kit and Threadlocker. Use these kits if the driveshaft splines are still serviceable. Fits front, center, or rear driveshafts on all 1961-1986-1/2 Dodge trucks with original equipment 1¼"-16 full spline slip stubs and original slip yokes that measure 2.125" between yoke ears and use an internal c-clip type joint.
Often the difference between a so-so job and a great repair are in the details such as replacing worn-out small parts.
QU11102 Grade 5 Front Driveshaft Bolt With attached washer. Four of these special Bolts are needed to attach the driveshaft to the transfer case output flange. More Info
Most CV and universal joint service is done using makeshift tools and hammering on the parts until something gives service methods. Driveshaft parts and universal joints are incredibly precise components that can be easily damaged by such slam-bang work. There is a better way to perform driveshaft service using application specific press tooling and approved service procedures. Yeah, I know the Manuals and Tools are expensive, but when you consider that a poorly installed front u-joint blowing out as you tool down the Interstate at 75 is going to cause an expensive and dangerous mess. I have witnessed several driveshaft failures in vehicles driving ahead of me during my travels and I can tell you a 3' long front driveshaft can do a heck of a lot of damage as it whips around jamming into the road, whacking the transmission, and smashing the floor!
We offer you the choice between our premium quality, very long lasting, Torque King® cold-forged, alloy steel, non-greaseable factory synthetic-lubed u-joints or greaseable hot-forged universal joints. Both are the best quality u-joints available in their classes to keep your vintage Dodge rolling down the road.