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Mopar rear axle spotter's guide

Yes that looks like the 8 1/4 axle. They are stronger than the 7 1/4 and are coming up in price as well. You will need that with a 360 engine.

Yup that is a sprag and it is not only found in a 904

The transmission end goes inside the trans. and holds the speedo gear unlike the 66 and up that threads on a seperate speedo gear at the trans.

It has rollers that roll into a notch at one direction allowing it to turn. When run the opposite direction there are springs behind them that lock them into the top of the groove pushing them into like a wedge between the sprocket and the sprag housing to stop it from turning in that direction.

I heard the garden tractor puller guys use the 7 1/4 axles.

Still good if the convertor snout is not rusted. I would put it in and fill the fluid let it idle while filling fluid then shut it down without putting it in gear. Then recheck level in 24 hours and run it through the gears. The reason I would do this is to saturate the clutches and let them...

Why I ask is tires will cause a harmonic vibration like you describe.

How old are the tires?

3.91 is the tallest I would go. 3.55 is an all around good driving gear.

It has been years since I did one but I remember you have to do the math between the pinion being removed to the pinion being installed. The pinion will be stamped .

When I did my 66 swap everything swapped over without hassle. Including cables and wheel cylinders.

I would probably just spend the money for the B&M flexplate. I bought a 73 360 from a truck with an 833 behind it and discovered the wrong flywheel on it when I took the trans off. I pulled the pan and discovered a spun main. I am not saying the balance caused this but you may want to check...

Yes when an axle shaft snaps it comes out on its own with a 7 1/4

What is going to make it break a shaft is on turns both shafts do not turn the same speed. Slow on turns and it may make a few burnouts. lol

lol somehow my quotes were not as fast as I was posting lmao

I have done it for mud in a demo derby the next weak spot is the shafts.

64 65 and 66 are also the same rear.

Take the bellhousing off the engine and try to put it on the trans. If it wont go on the trans its the retainer size if it does then it is probably the crank hole as I said earlier.

Sorry just read the other comments these guys are right check the hole in the bellhousing.

The crank may not be drilled deep enough for the input shaft. Was the engine an automatic before this?

I have some non sure grips rears I would sell if you needed one. I am just south of Detroit.

Good to hear that she is better now.

Check with truck repair shops. They can refer you to who they use.

There is an arm that came with it different from stock and I always set mine in neutral and adjust the cable so it drops right in the hole without effort.

Are the axle shafts the same spline?

nope

What? No beer for us

That poor thing lost a bar fight.

Crazy never seen that before