- Driveshaft Info
Choosing The Correct Style
Here are the general guidelines on choosing the correct driveshaft style:
1. Go with the style that originally came in the vehicle. This holds true for most vehicles that have not been heavily modified.
2. Go with a Transmission Slip Yoke style for most classic car applications. Always be sure to go with 1350 series u-joints for high horsepower, racing, and drifting applications. Need a 1350 series pinion yoke? Check out our Pinion Yokes.
3. Go with a CV (or Flange CV) style if you are running through an angle. Most 4x4s will have or need a CV style driveshaft.
4. Go with a NON-CV Slip/Spline style for 4x4s with minimal angle, or for flange to flange applications.
Choosing Your U-Joint Series
We can match what you have on your differential, transfer case, or bolt down transmission yoke. The key is to correctly identify what u-joint series you need. Just follow the steps to correctly identify the u-joint in the custom order process, or view the Determining U-Joint Series page.It is perfectly fine to have two different u-joint series on your driveshaft. It will not affect performance, unless you are running a high horsepower set-up. In the case of high-horsepower, make sure both ends are 1350. If you would like your u-joints to match or need an upgrade to handle the horsepower, then check out our selection of 1310 and 1350 Pinion Yokes and Transfer Case Yokes in our parts section! Here is our take on what u-joints are used for certain applications:
1310: Commonly found on everything. Typically rated up to 400 HP. This series is used in 4×4 applications, cruiser hot rods, and OEM replacement. Has outside snap ring.
1330: Commonly found on Ford. Has outside snap ring.
1330 LC: Commonly found on Ford (Especially on the 9 inch rear end). Same width as 1330, but with a slightly larger cup, hence the name Large Cup (LC). Has outside snap ring.
3R: Commonly found on GM. Has inside snap ring.
7260: Commonly found on Dodge. Similar in size to 1310. Has inside snap ring.
7290: Commonly found on Dodge. Similar in size to 1330. Has inside snap rings.
1350: Commonly found on everything. This is a high-performance u-joint. This is the best u-joint for high horsepower applications or heavy-duty 4×4 applications. We highly recommend using 1350 series u-joints for all racing applications. Has outside snap rings.
Choosing Your Tubing Size
Length and horsepower are the two big factors to consider choosing the tube size. As the length becomes longer, the tubing diameter needs to become larger. The same rule applies to horsepower. Be sure to check for clearance issues with anything near the driveshaft like oil pans, exhaust, and crossmembers.
2” x .120: Used for 4×4 CVs and NON-CV Slip/Spline.
2.5” x .065: Used for car applications under 400 HP.
2.5” x .083: Used for high horsepower cars, 4×4 CVs, and NON-CV Slip/Spline.
2.5” x .095: Used for 1350 Flange CVs only.
3” x .065: Used for car applications under 400 HP.
3” x .083: Used for high horsepower cars, CVs, and NON-CV Slip/Spline style.
3.5” x .065: Used for car applications under 400 HP.
3.5” x .083: Used for high horsepower hot rods, 1350 Flange CVs, and NON-CV slip/spline style.
Transmission Slip Yokes
You need to count the splines on your transmission output shaft. Then use your dial calipers to check the inside diameter of the transmission seal, this measurement is equivalent to the hub diameter. Then match up your spline count, hub diameter, and transmission to our Transmission Slip Yoke Chart and you got it! For all race, drag, and drift applications we recommend 1350 series u-joints and upgrading to the SONNAX™ chromoly transmission slip yoke if possible. For more details visit Choosing Transmission Slip Yokes.
READ IF YOU HAVE A TH400 TRANSMISSION:
This is a great transmission, but also one of the hardest to size up for a slip yoke. Depending on what your 400 came out of dictates what slip yokes will fit. If you have a slip yoke that properly fits the transmission, (barrell slides ALL THE WAY into the back of the trans) then check our list to see if we have the same one. If you have a threaded output shaft or you do not know for certain that one of our other TH400 yokes will fit, then we will strongly encourage you to choose our 1350 series TH400 part number: N3-3-2431X or the chromoly option NT3-3-2431CBHP. These are the only TH400 yokes we can guarantee to fit your transmission.
Choosing Your Flange
We offer the most common flanges on the market. Some are only available in 1310 and others only in 1350. To best measure for a flange, we recommend that you use dial calipers to take your measurements (in inches). Follow our guide on Measuring For A Flange. Be as accurate as you can!
Choosing Your Extras/Hardware
For flanges, use a grade 8 bolt that will fit properly for your application.
1310 CV heads take our CV bolts to mount to the transfer case yoke. If you have a pinion yoke on your differential or a non-CV style yoke on your transfer case or transmission, then you need to determine if you need a strap kit or u-bolt kit. To do this, check the holes in the yoke (sometimes it is easier to see if there are threads from the back of the holes). If there are threads then you need a strap kit. If there are no threads you need a u-bolt kit. Make sure to always compare the specs of the kit you think you need to your yoke. For flanges, use a grade 8 bolt that will fit properly for your application.