mischiefdart
Well-Known Member
Does anyone know of a shop in the Philadelphia area that shortens and resplines axles?
shortening 8 3/4 truck axles?
- Thread starter mischiefdart
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69MOPE
Well-Known Member
No. I box them up and UPS them to Moser Engineering. Get the back in a week.
mischiefdart
Well-Known Member
How much does the shipping run you?
69MOPE
Well-Known Member
I shipped them from work, that way it was commercial to commercial, cheaper. Around $28 one way.
mischiefdart
Well-Known Member
Do you know what there current fee is?
mopar head
Well-Known Member
Are not OEM splines hardned? If so does Moser rehardned after cutting?
Same here. I've had axles ruined trying to get them done locally. Do it right, do it once.
mischiefdart
Well-Known Member
My car is minitubbed so narrowing a truck rear. Not happy with the bare dana 60 (no axles or gears) it came with. Running 440 auto so 8 3/4 will be fine.
74Dusted
Stock Piler of 340's
Could be a problem, all 8.75" Truck axles I know of are Pre-1974 (as far as I know 74 was the last year of the 8.75" in trucks). Pre-1974 Dodge trucks had a 5 on 5.5" Bolt Pattern. EXCEPT the 1974 Ramcharger & Trailduster, which came with the 5 on 4.5" Bolt pattern a year earlier than the Pickup Trucks.
mischiefdart
Well-Known Member
1984 was the last rear for 5 on 4.5 on 1/2 ton trucks. I had an '81 van that was 5 on 4.5 for sure because it came with Warlock/lil red express steel slots that I put on my '73 Cuda
Complety false, I have never seen a dodge with an 5.5" pattern.
I have had the following tucks and they all had the 4.5" pattern with 8.75
56 dodge
69 dodge
71 dodge
74Dusted
Stock Piler of 340's
The 56 Dodge had a Chrysler 9-5/8" Axle in it (the axle the 8.75" was based on in design) if it was the original rear. Those are 5 on 4.5" (dating back to the 1930's)
All 4WD 1/2 Ton Dodges 1974 and earlier (I forget when, sometime in the early 60's) are 5 on 5.5" pattern. Apparently the 2WD's were 5 on 4.5" (I had to look that up, not much of a 2WD guy. That's where I goofed up). 8.75"s were more common in the W100 (4WD) than they were in the D100 (2WD). You're more likely to find an 8.25" or 9.25" under a 2WD (but 8.75's were an option).
So keep that in mind when you pull a rear from a truck, the 4WD's ARE 5 on 5.5" up until 1974 (and in 1980 they went back to 5 on 5.5" on the 4WD's again) The change from 5 on 5.5" to 4.5" involved the changeover to the NP203 Full Time 4WD Transfer Case and its Unit Bearing Hubs with Drive Flanges (No Hubs/Lockouts). When they went back to Part Time 4WD in 1980, they reverted back to the 5 on 5.5" Pattern for the 4x4's again.
russhal
Well-Known Member
I did this in 2002 with my 72 swinger. Narrowed a truck rear end (8 3/4) to 49" and mini tub the car. Moser does a process called cold splining. The axle is already hardened. It was $95 and shipping was almost as high both ways. A friend did the same thing in his race car. Not such a good idea. Hard hitting big block and a little nos. The axle splines looked like a barber shop pole. I would buy some from Dr Diff. I never had any issues in my car and I started with a 360 and went to a 440 that was about the same as a 69 hp motor. The point is, street ok, race not so ok. Russ
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