Spline count on 8 3/4 axles

[70 net440]

What is the spline count and axle length on a '70 swinger 8 3/4? I'm looking to convert over to large bolt pattern axles and am to lazy to pull an axle right now. Also, does anyone know if the Moser axles will accept stock a-body brakes, unlike the Yukons? Thanks in advance.

[Kevin Garceau]

I put bigger b body brakes on my 8 3/4, and moser axles. I did go to larger spacing on the bolts and just had to redrill the drums. I dont think you will have any problems but give them a call. Moser is awesome to deal with. If you need a set of gears let me know I have a set sitting here. I am switching to a Dana and have all kinds of 8 3/4 stuff that I would like to get rid of and save some cash on the dana deal.

[Slingshot383]

Stock spline is 30 spline. I have a set of 3.91's for a 489 case, used 1 season in my car, look like new.

Kevin, what kind of 8 3/4 parts do you have?

[6 packin]

The stock axles have 30 spline count regardless of bolt pattern.

[amxauto-x]

The Mosers [large bolt pattern, 5x4 1/2"] I have work just fine with the 10"x3", drum brakes. I bought new drums at the local speed shop. They didn't cost much, $10 each I think. Better than redrilling unless you have a mill to get them real acurate.
I've never heard of Yukon axles. How can they make something that doesn't work with the stock brakes? I'd keep away from them.

[440barracuda]

Hey, im looking for some 3.91 or 4.10 gears for 742 or 489..... anything else u guys got?

[Slant Cecil]

Yukon is a Strange Eng economy brand. Moser and Yukon can make the axle to take the 10" A body brake but there is no reason to keep A body brakes. Other 10" brake parts do not interchange. New A body brake drums are $130 and up when you can find them. Besides A body 10" brakes are 1 3/4" wide, other Mopar 10" are 2 1/2" wide. Used 10 x 2 1/2" setups are very plentiful and replacement parts cheap and common. Never heard of a 3" wide 10" brake.

Cecil