moser axles

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dartnfish

dartnfish

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i should be asking moser but they may tell me whatever i want to hear? going to to buy bbp axles for an 83/4. they show an oem axle? i would asume i could redrill drums with this axle. they also show another axle (more expensive) that shows you drilling the 4" drum. not sure if guys are ordering the wrong axles or what but i have read some concern that the 10" brakes will not work with certain mosers axles? should i buy moser or look elsewhere?
 
Give Moser a call, but do yourself a favor and get the standard Mopar big bolt offset axles (probably the cheaper ones) and use original big bolt pattern brakes. All you need is the backing plates and other brake parts from a big bolt car, any axle.
 
I had a Chrysler 9.25 rear narrowed to fit my '71 Duster with 8 3/4 ends and Moser axles. I used 72 Dodge truck brakes along with backing plates. Bolted right up.
 
They offer bbp and have a body offset and b body offset (depends on which backing plates you use/buy).
 
sounds like i should go with the bigger b body brake while i'm at it? is there that much of an advantage with the b body set up vs. using the moser abody 4.5 axles with the stock10" brakes? i may get cass's opinion? thanks for the info and any other that may come along.
 
The advantage is that you can use readily available brake parts. I have done the C-body 11" brake swaps on a couple of cars, but the rear brakes I have for my Barracuda are 10x2.5" from an '87 Fifth Ave. Once you redrill the original A-body drums you will have to do that to any set you buy and they are getting hard to find these days.
 
Jim Lusk said:
The advantage is that you can use readily available brake parts. I have done the C-body 11" brake swaps on a couple of cars, but the rear brakes I have for my Barracuda are 10x2.5" from an '87 Fifth Ave. Once you redrill the original A-body drums you will have to do that to any set you buy and they are getting hard to find these days.
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thanks jim. very good point. not sure i'll ever drive it enough to where the drums out but...
 
so if i put the b body offset axles in a 68 barracuda and use the b brakes what backspacing and offset would i need to run on the new wheels? was also thinking of relocating the springs to fit a wider tire. not sure of where to start on sizes.
 
It really depends on what size wheel/tire you want to run. We have (had, the tires are bad so there's something else on there for now) stock 15x6.5 rallyes on my son's 67 Dart convertible with 235/60/15 tires.
 
like the other guys already said , a body stock brake axles will be a little narrower ( same as it is now) B body gives you more brake options.
oh and all the a body brake parts are availible on Rock Auto. just did a Stock a body moser axle set up on the kids dart.
only difference was the replacement rear drums dont have the big bell.
 
Do what Jim Lusk and the guys said.

I ordered the M30cst-AB45 for my 1970 Duster. The OEM is plenty strong, in fact Moser will tell you they are 90% as strong as their racing axles. They are A-Body OEM with the B body drum brakes which has the Big Bolt Pattern.

I order the Moser axles, green bearings, and 1/2" studs from Moser through summit. At no charge, Moser installed the bearings and studs.

Then shipped them w/ gaskets to my house. Shipping was through Summit-$12.95. plus tax, since I lived in Ohio.

Go through Moser and you'll pay higher shipping for sure.
 
Just something to think about but I bought my Moser axles from Summit cheaper than I could from Moser and the wheel studs.
 
dartnfish said:
i should be asking moser but they may tell me whatever i want to hear? going to to buy bbp axles for an 83/4. they show an oem axle? i would asume i could redrill drums with this axle. they also show another axle (more expensive) that shows you drilling the 4" drum. not sure if guys are ordering the wrong axles or what but i have read some concern that the 10" brakes will not work with certain mosers axles? should i buy moser or look elsewhere?
Click to expand...


there are two different big bolt axles..

one for use with the small bolt pattern drum set up.

the other for use with big car brakes. B,C,E bodies and trucks/vans.

yes the big car brakes are a hair wider but nothing that will hurt you in anyway. with the rear a hir wider you'll get a little wider tire under there before hitting the spring.. :)
 
dartnfish said:
so if i put the b body offset axles in a 68 barracuda and use the b brakes what backspacing and offset would i need to run on the new wheels? was also thinking of relocating the springs to fit a wider tire. not sure of where to start on sizes.
Click to expand...

I converted to BBP in my 68 cuda maybe 5 years ago. I sent C body axles to Moser via UPS and had them shortened. The VERY NEXT morning, they called me at work to confirm what my plans were. I told them I was using 69 B body backing plates and 10 x 2-1/2 brakes. They shortened and resplined the axles and I had them a few days later. (new length was exactly 28")

I installed them in the stock width A body 8-3/4 rear end. Before removing the a body axles and stock 10 x 1-3/4 brakes, I plumb-bobbed the outside face of the stock axles to the garage floor and made a mark. The shortened C body axles added exactly 3/8" to the track width on each side compared to the stock a body 8-3/4". You can book that dimension cause I carefully measured it.

I had 15 x 8-1/2 SBP Centerlines (4-78" B.S.)before the change w/ 255/60 tires. The inside side wall of the tire just touched the spring so the previous owner had 5/16" spacers in there to provide clearance.

Depending on what you are trying to do, what tire/wheel you end up with, what car you are working with, etc. Your back space will vary but if you do not relocate the springs, 4-1/2" should be safe. I'm now running 15 x 7 original Mopar steelies on all 4 and the backspace on those is 4-1/4".

Whatever you do, you MUST match the backing plates to the brakes! There is an offset built into the backing plates to compensate for the shoe width. For instance, you cannot use 1-3/4" backing plates with 2-1/2" shoes.

In my opinion, (not that anyone asked) 11" drum brakes on the rear of an a body are overkill. And the extra rotating mass will definitely make your car slower. Physics don't lie.
 
i would like to stay with the 10" brakes. so i guess now i just need to find some backing plates! i would like to know i have them before i order axles. guess i'll check my local junk yards cause i bet shipping would be pricey.
 
dartnfish said:
i would like to stay with the 10" brakes. so i guess now i just need to find some backing plates! i would like to know i have them before i order axles. guess i'll check my local junk yards cause i bet shipping would be pricey.
Click to expand...

Nope they'll fit in a USPS flat Rate medium size box (~$12 to ship).
 
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