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Re: i want to redrill my small axles to large bolt pattern
[Re: Challenger 1]
#1521578
10/22/13 06:52 PM
10/22/13 06:52 PM
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Joined: Jan 2003
Posts: 43,517
Round Lake Beach, Illinoisy
Rhinodart
Rhinotruck
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Rhinotruck
Joined: Jan 2003
Posts: 43,517
Round Lake Beach, Illinoisy
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Back in the day I ruined a couple sets of axles and wheel wells.  I would never weaken the axle nowadays with plenty of big bolt axles available aftermarket.  Talk with Dr. Diff. 
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
JB Rhinehart, Realist
A-Body's RULE!
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Re: i want to redrill my small axles to large bolt pattern
[Re: Rick_Ehrenberg]
#1521582
10/23/13 03:01 AM
10/23/13 03:01 AM
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Joined: Jun 2004
Posts: 469
Hawaii
Dodgeballs
mopar
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mopar
Joined: Jun 2004
Posts: 469
Hawaii
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Quote:
You'll still have the small center register, so no wheels will pilot, and you'll have oddball drums. If you're bucks-down, just take a chop saw to C-body or pickup axle shafts.
Rick
Can any C-Body axles be cut to fit the A-Body 8 3/4? How much needs to be cut? What year trucks? I have re-drilled A-body axles right now, but would like the big register. I would still have to use the A-body drums and re-drill them, right?
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Re: i want to redrill my small axles to large bolt pattern
[Re: Dodgeballs]
#1521584
10/23/13 06:21 AM
10/23/13 06:21 AM
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Joined: Sep 2003
Posts: 1,688
Marlboro, NY, USA
Rick_Ehrenberg
top fuel
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top fuel
Joined: Sep 2003
Posts: 1,688
Marlboro, NY, USA
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Quote:
Quote:
You'll still have the small center register, so no wheels will pilot, and you'll have oddball drums. If you're bucks-down, just take a chop saw to C-body or pickup axle shafts.
Rick
Can any C-Body axles be cut to fit the A-Body 8 3/4? How much needs to be cut? What year trucks? I have re-drilled A-body axles right now, but would like the big register. I would still have to use the A-body drums and re-drill them, right?
No, you'd use brakes (complete) from any "big bolt" 8-3/4" (or even 8.25 / 9.25" with the same bolt pattern).
I used to have the data showing which donors had enough spline length to cut, but I cannot find it. Hopefully someone else will chime in.
Also inexpensive new axles are made specifically for this swap (Yukon, etc.)
Rick
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Re: i want to redrill my small axles to large bolt pattern
[Re: SLOW67]
#1521586
10/23/13 10:54 AM
10/23/13 10:54 AM
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Joined: Jan 2003
Posts: 43,517
Round Lake Beach, Illinoisy
Rhinodart
Rhinotruck
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Rhinotruck
Joined: Jan 2003
Posts: 43,517
Round Lake Beach, Illinoisy
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Like I said above after losing a couple redrilled axles (your use may vary)  I sent a pair of C-Body axles to Moser to have them cut and resplined (this was in 1980) and used the 11" C-Body brakes and never looked back. Now that there are plenty of ready to use axles I would go this route today.
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
JB Rhinehart, Realist
A-Body's RULE!
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Re: i want to redrill my small axles to large bolt pattern
[Re: MoparforLife]
#1521587
10/23/13 11:18 AM
10/23/13 11:18 AM
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Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
RobX4406
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
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Quote:
Drilling and tapping using screw in studs leaves very near as much meat around the stud as the OEM original knurled pressed in studs
Quote:
The axles on my sons Dart were drilled to the large pattern and has screw in studs. It was done in 1997 and the axles are still in the car. It has been raced and driven over the years with no problems. Ron
You guys need to quit making sense.
I've done the same thing. Launching off a transbrake and running sub 1.50 60's.
Run stud centric wheels.
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Re: i want to redrill my small axles to large bolt pattern
[Re: Rhinodart]
#1521590
10/24/13 06:45 AM
10/24/13 06:45 AM
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Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan
I Live Here
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I Live Here
Joined: Jun 2008
Posts: 10,847
Oakdale CT
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Too close to the edge, I'm frugal and would not even consider it after looking into it.
Pick up some truck or a set of C-body axles and have Moser work their magic or if you are a fan of sealed bearings (I'm NOT) get some aftermarket axles.
"I think its got a hemi"
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Re: i want to redrill my small axles to large bolt pattern
[Re: gdonovan]
#1521591
10/24/13 01:14 PM
10/24/13 01:14 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
Too close to the edge, I'm frugal and would not even consider it after looking into it.
Pick up some truck or a set of C-body axles and have Moser work their magic or if you are a fan of sealed bearings (I'm NOT) get some aftermarket axles.
Not if you usse screw in studs. There is all most as much meat around the stud as the large holed knurled type. You will break a stud before you break the flange.
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Re: i want to redrill my small axles to large bolt pattern
[Re: Dodgeballs]
#1521593
10/24/13 02:17 PM
10/24/13 02:17 PM
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Joined: Nov 2003
Posts: 5,048
Atlanta Indiana
Dave Watt
master
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master
Joined: Nov 2003
Posts: 5,048
Atlanta Indiana
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Quote:
Can any C-Body axles be cut to fit the A-Body 8 3/4?
No. There are only a few years in the early '70's that will work, and they are usually in a C-body wagon. The only way you can tell is that just past the splines will be the same diameter at the splines. Most are a smaller diameter in that area preventing them from being resplined.
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I have had several sets of A body axles done by a shop in SO CA years ago, he made a mandrel that centered on the small axle register with the large 4.5 inch bolt pattern in it and then transferred the pattern to those axles, he would drill and tap them for 1/2 inch by 20 threads screw in studs 
Actully you will twist the left side axle splines off and break the axle first before the screw in studs give you any problems, trust me on that