What axle is on fj40?

Eff-Jay-Farty. The 40 series axles are equivalent of a Dana 60, the 3/4 ton axle. If you are worried about breaking them, upgrade the Birfield and you can sleep easy at night.

How do you tell if an axle is a Dana 44?

Many Dana axles have the model ID cast into the fins or centersection. Look for a “44” or “60” cast into the reinforcement ribs. The number can usually be found on the lower right side rib below the differential cover, but it may also be found on other ribs or on top of the main cast structure.

What is so special about a Dana 44?

The Dana 44 has a GAWR up to 3,500 lb (1,600 kg) and is a semi-floating type, having one bearing on the end of the axle shaft which carries the weight of the vehicle on the axle and also allows axle rotation. There is an 8.9″ diameter Dana 44 ring and pinion that is very different from the standard Dana 44.

How strong is a Dana 44 axle?

They are about as strong as a 10 bolt. They saw duty under supercharged stude v8s so they can be too weak.

What’s the difference between a Dana 30 and Dana 44?

The only difference between the JK Dana 30 and Dana 44 is ring gear size, electronic locker, and bigger shafts. You’re better off just starting with an aftermarket Dana 44 that is a “true 44”.

Can a Dana 44 Handle 33 inch tires?

If all you’re doing is overloading and mild-trails, the stock Dana 30/Dana 44 combo will handle 33s as long as you aren’t one of those guys who assumes that the answer to being stuck / hung-up is always more throttle. Those 33.9″ tires are more like a 34″. Can the stock axles handle it? Yes, they can.

Is Dana 44 better than 30?

The only difference between the JK Dana 30 and Dana 44 is ring gear size, electronic locker, and bigger shafts. You’re better off just starting with an aftermarket Dana 44 that is a “true 44”. With the cost difference between a base Wrangler and a Rubicon, you could get aftermarket Dana 60 axles with lockers.