What spline is a Ford 9 inch?
31 Spline
Ford 9″ (9 inch) – 31 Spline.
How many splines does a Ford 9 inch axle have?
Axles came in 28 or 31 spline versions from the factory. Typically the more splines the better up to a point. You’ll commonly see 9″ race axles with 33 or 35 splines. The differential spline count has to match the axle spline count.
What is the difference between 28 spline and 31 spline?
A 28 spline axle will have a recess in the middle while a 31 spline axle will be solid with just a centering champher (from when it was machined and ground at the factory).
What’s the difference between 10 spline and 26 spline?
The most obvious difference of a 10 spline and 26 spline input shaft is the number of splines on the transmission’s input shaft. Similar to 28 spline vs 31 spline axles, the 26 spline input shaft allows for more contact area for a stronger, more reliable shaft under high horsepower conditions.
Are more axle splines better?
Higher spline counts gives the axle more surface to transfer the load of the torque from the differential. There is also the side advantage that an axle with more splines will also be physically bigger. At least in most modern axles that use similarly sized spline teeth.
Why is the Ford 9 inch so strong?
1] The 9-inch Ford has no differential case gear-ratio range restrictions; one differential accepts all gear ratios from the 2s through the 6s. 4] A larger offset (hypoid distance) between ring-gear and pinion-gear centerlines is the key reason the Ford is inherently stronger—but also why it’s slightly less efficient.
What gear ratios are available for Ford 9 inch?
Choice of Gear Ratios: 2.50*, 2.75*, 3.00, 3.25, 3.50, 3.70, 3.89, 4.11, 4.30, 4.56, 4.71, 4.86, 5.00, 5.14, 5.29, 5.43, 5.67, 5.83, 6.00, 6.20, 6.33, 6.50 NOTE: 2.50 and 2.75 are take out gears.
Are more splines better on a clutch?
Just like with rear axles, the higher the spline count the better for your high performance Mustang application. By doing these upgrades, you will have better reliability and also longevity out of your car.
How do I choose the right size spline?
You want spline to be bigger than the actual opening so it fits snug and doesnt blow out during wind or light pressue. When using Pet Screen, Suntex or other thicker materials than standard fiberglass screen . 005-. 010 larger is prefered.
How deep should splines be?
Anatomy of the joint The dimensions of a spline are similar to the dimensions of a tongue-and-groove joint. If the working stock is 3/4 in. thick, the spline should be 1/4 in. and no more than 3/4 in.