HDJdreams
SILVER Star
Nitro took over the Poly Performance chromoly rears, they are $450. I wonder if this became a thing, if they would do them in 32 spline.
AXTFF-FJ80
And drill the hub flange for 6 dowels.
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Nitro took over the Poly Performance chromoly rears, they are $450. I wonder if this became a thing, if they would do them in 32 spline.
AXTFF-FJ80
We offer 4.30 4.88 and usually have 3.90 and 4.10 OE takeouts as well
I think you are running a 1HDT, and perfect gearing may be different than my perfect gearing with the 6BT, but I will give my perspective on what the best combination for me is.Planning on doing 1.1 high range transfer case gears now with stock axle ratio (I have new “34” inch BFGs) then replacing those down the road with 37s and upgrading axles. 4.56 would be perfect, 4.88s would be on the low side.
I think you are running a 1HDT, and perfect gearing may be different than my perfect gearing with the 6BT, but I will give my perspective on what the best combination for me is.
6BT + NV4500 + 1.1 Overdrive gears in HF2AV + 4.1 diff gears + 37" tires, brings my engine RPM to about 1800 at 70mph, which is perfect for the cummins motors peak operating band.
So, being semi-ignorant on this......
If I wanted to just beef my drive train a bit, I could:
1) Buy a stock 100 series differential (4.11 gears, 32 spline pinion, 30 spline axles)
2) Buy a replacement 32 spline flange to adapt to my driveshaft (or replace one end of my existing driveshaft to match)
3) Buy "custom made" axle shafts for the rear full-float axle housing
4) Drill the hubs on both sides for more dowel pins and install hardened dowels
5) Assemble
6) Well, it's step 6........
Is that what you're saying? Especially if I wanted to stay with stock 4.11 gear ratio? (I know nothing about the 100 series, so this thought process is new for me on this.)
Thanks for the pictures! Obviously the 32 spline is bigger, but for us geeks out there what’s the minor diameter of the 32 spline vs 27?
Ok, the next question on the list is can I buy factory locked 100 diffs and plug them into my 80 harness?
What about enough room left in there for the locking diffs in general (ARB/Harrop)
As rare as locked 100 diffs are, it would be a lot easier (and stronger) to go for ARB/Harrop. The point of the mod is to get the strongest rear axle possible, the factory locker would be a step back.
That I can not answer sorry I do not know if a 100 locking rear diff will plug straight in.
But an ARB 100 rear carrier will work and is what you need to use the 100 ring and pinion, etc.
As rare as locked 100 diffs are, it would be a lot easier (and stronger) to go for ARB/Harrop. The point of the mod is to get the strongest rear axle possible, the factory locker would be a step back.
Significantly. But remember your t case output is a hollow 30 splineThanks for the pictures! Obviously the 32 spline is bigger, but for us geeks out there what’s the minor diameter of the 32 spline vs 27?