Which differential for a scratchbuild?

[MAStuart]

Any chance you got a price from Hawk cars. I believe you can get them in iron from them. I myself would be up for one in a bare iron case.

[120mm]

Originally Posted by MAStuart

Any chance you got a price from Hawk cars. I believe you can get them in iron from them. I myself would be up for one in a bare iron case.

1995 GBP. Which turns into $2653 at today's exchange rate of 1:33. That's for the bare iron case.

[520SC]

If you're willing to go without IRS then an inexpensive alternative is a Ford Explorer 8.8" rear end. Here's a comprehensive article on how to shorten one. The article has four parts. I've posted the link to Part 1. At the end of Part 1 you'll find the links to Parts 2, 3, and 4.

http://thefabricatorseries.com/build...prelude-and-qa

[LMH]

It seems to me that North Devon Metalcraft was a source for 4HU differential cases a while back. I'm not 100% sure of that but you might send them an email and find out.
Home

Larry

[Tom Kirkham]

Another source for diffs:
Cobra diff housing - iron and ally cover #
Note: there are a lot of pieces missing...

They also sell original spec comp brakes.

[120mm]

Originally Posted by Tom Kirkham

Another source for diffs:
Cobra diff housing - iron and ally cover #
Note: there are a lot of pieces missing...

They also sell original spec comp brakes.

At least as far as I'm concerned, one of your alloy ones painted black would be sufficient.

[db replicas]

I'm playing around with producing orig. diff cases.
More info on my Facebook page. :-)

[MAStuart]

Dave what would a bare case ship to the us cost? How close to an original do they look if the were side by side.

Mark

[db replicas]

Hi Mark.
The casting pattern was copied from an original.
I don't know the final price fore the machining yet.
Hopefully have more info in the next week or so. ;-)

[MAStuart]

Please post when you get a price. Also what other parts to you have.

[oldboy001]

I installed a Ford Explorer 8.8" IRS differential in my build (HiTech 427 Cobra Frame). Took a little experimentation, but if fits nicely. I went a little over board and used Porsche 933 CVs (33 spline half shafts) on the diff side and upright side (Original 427 uprights). Fabricated the IRS stub axels and modified the 427 stub axel flange (upright side) to accept the 933 CVs. Waiting for my Axels.

Scott

427 Cobra Frame & Suspension
289 fiberglass USRRC Body
Boss 302, EFI, 5 Speed

[MAStuart]

Scott could you elaborate a little on your stub axles. What material are they made of. Did you machine them ? If so do you have any pictures of the process?

[oldboy001]

Yes, I have pictures of everything. It will take me some time to sort through them and describe the process. I will try to post over the weekend.

Scott

[eschaider]

Ford came out with a new set of IRS half shafts a couple years ago that use the larger Porsche CV joints with their 8.8" center. The axles use a new larger set of stub shafts to accommodate the larger Porsche CV joint, probably similar to what you had to custom manufacture, Scott.

The pic of the stub shafts was too big to put in the thread so here is a link to a pic of the stubs;

https://gforce1320.com/wp-content/up...OR10104A-2.jpg

GForce offers the complete aftermarket package including boots, CV's and axles. While they provide versions for OEM applications they will also make the axle shafts any length you require so they can easily be sized to fit our cars.

Depending on the spline count in your rear drive hubs you may or may not have to have them install different drive splines on the wheel side of the axle.

This is a pic of the complete package including the larger 8.8 stub shafts for the Porsche CV's;



Hope this is helpful for anyone contemplating this sort of upgrade.


Ed

[joyridin']

Originally Posted by 120mm

BTW, the XJ6 and C4 Corvette internals are structurally identical. They are both Dana 44s. Only the C4 rear requires redesign and re-engineering to fit into the space of a 289 leaf spring rear suspension. It "appears" as if the C4's mounting points are exactly where the leaf needs to go.

Not that is matters at this point, but auto Corvettes used a Dana 36. Stick shift cars used a Dana 44. I would never use a D36 unit on any big block or hefty small block car.

Just for future reference for others reading this post.

[db replicas]

Getting closer.
Going off the be built up next week. 😊

[db replicas]

All built up and working. :-)
http://www.clubcobra.com/forums/atta...1&d=1532290328

This one is built up using all Jaguar Salisbury internals.
(Original Cobra guts fit too...
. Just a LOT more expensive)

Sorry about the orientation.