[SuperB70]

Rear end time.

Have build few 9" good and pro versions
(read expensive and bonkers expensive)
I dont have that kind of money or dont want to spend them on those.
Also I need low ratio gears. Low 3 something.
Trans dont have long overdrive (0.83) and engine will not turn high rpm.
So if I want car to have any kind of higher (expected) top speed, I need gears. And when Gear Vendor has not return my enquiring.. LoL
-"I need GV-OD to SLR MCLaren Mercedes.." 8)
Have seen many times that all 9" low gears sets without FORD stamping will be loud, sooner or later.
So 9 inch was out.

So something else...

Started looking strong alternative. One of the first looked Dana 70.
But I chosed Ford 9.75". From F150 with 3.08:1. Will be with True-trac.

Some of you may remember that I discuss about this at rear end section with my first design.

Idea is to build full floater with modern easy to get new, affordable parts. Had to forget single bold systems, dont want to start fab wheel arches. Actually they went to my customer project.

After rear end arrived from States,
I disassembling it and started to design needed parts/ tools. Had local laser shop cut parts, local machine shop machine turned tools for me. Years biggest car show was around the corner and had to spread workload. And I fractured my index finger at work.
Tools is to get tolerance grinded 50mm /2" solid bar in the middle of carrier side bearings place.
Inserting tools to fit in tolerance machined wheel bearing hubs, so that 50mm bar is in the middle and can be used to verify hub to be at axle center line.
Installed heat to slide on axle tube, shrank to lock hubs to correct width, tig weld them with using insert tools. Also use them to check that hubs still where in the middle of the axle center line.. Wheel bearing hubs are from Cadillac CTS-V, so is backing plate, parking brake, 4 pot Brembo calibers and 14.5" aftermarket rotors.



Axles will be done by me with 4axle cnc lathe..
From 300M high strength steel, again from our local steel factory.
Ford has 34 splines, Caddy has 33 splines.
They actually are done in now, real time. Yesterday did first tool paths for them.

Wheel bearing hubs still need to be lighten, will do that when welding brake caliber brackets on them. Also fab more stiffing to the link brackets and axle tubes..

Rear end will be hang with double adj. coil overs, 2.5" air jacks and 3 link, was easy to calculate bar lines, angles and lengths when car is on the frame table. Bars are made from that Docol R8 high strength tubing, CNC machined threaded ends.

Forged M20 spherical rod ends are modified, bearing halfs and balls are pressed off, made simple molds and took them to my friends company. They will cast polyurethane buslings on them. More about them later. Another great idea for sure.. I just hate solid rod ends, all the noise come straight through. Great for race car but not for Grand Tourer.

Drive shaft will be another challenge. Trans has fixed flance( from IRS rear), drive shaft would need to have slide and hold around 1500 ft lbs of tq.
But I've an idea.. (an wild idea)

Havent decided whether to buy the diff cover or make my own... I do have many cnc machines at my disposal now days..

Now I can measure and order my wheels... Something different for sure, again..