Springfield Flyer.

[Riaan Lingenfelder]

Hey Mike.
We realy need to get all the guys together before bonus time. Just a quick roasting and a few beers. We need to build on the strengths of the TEAM.

[tauruck]

I'll try get answers on when they can come around. Thanks Riaan.

[Captthundarr]

Wow, nice crew list. I didn't know I was doing the work of 9. I need a raise...if I was getting paid.

[tauruck]

Frank, my friends don't get paid.
They are enthusiasts like us.
We've never been together as a group.

[Captthundarr]

Few, dang few, get paid I know, just saying. get them together for beverages of choice and the ideas will flow.

[tauruck]

Mr. Hartman, you are a true gentleman. 

[Captthundarr]

Thank you kind sir. Now back to making nice junk.

[tauruck]

I collected the 2.28 "I think??" rear end today.

I don't know a thing about these GM differentials and
I'm hoping Sparky will tell me if it is the right unit before
I cut it up to get to the good bits and remove the crown wheel etc.

You can all chime in if you like.

I'm a little shocked. I got to George's house and it looked
very ordinary with one single garage door that is a bit of a decoy.

Once behind it, it was a huge yard full of Mopars and a couple of Chevys and Fords.
The guy has Cudas, Chargers and a few I can't identify.
36 years of collecting. He has so many motors it's scary.
I was dying to shoot a few pics but didn't want to invade his privacy.

[Peter Jack]

Pull the cover and count the teeth. Divide the crown gear count by the pinion gear count. The resulting number is the rear end ratio. You can just turn the pinion and see how many turns you make to make the axles turn once. This also gives you the ratio but it's hard to tell for sure if several available ratios are close together.

Pete

[tauruck]

Thanks Pete. I know the ratios but I needed to make sure that it is a 10 bolt 7,5" GM unit.
I Googled and from the images there it looks right.

[SPARKY]

The axle tube should be 2 5/8" OD  shoot a pict. of the back of the diff ---if it has 2.28 gears the 2.14s should drop in ---when I find  some---I just have to find a new set  seems some of mine are in Oz and other places  I though I still had a set.  I will as soon as I find some to pass on. 

[kiwi belly tank]

Looks like a 7.5 from a G body. High ratio 3.08 up to 2.14 are a two series & interchangable. If it is an open carrier it's too weak for HP, they break around the flange.
  Sid.

[tauruck]

I just measured and it is 2 5/8" 2.28 ratio.

Do I just drill out the rosette welds on the case to remove the tubes?.

Thanks Sid and Sparky.

[tauruck]

I just stripped the rear end. It takes 26 spline axles.

I'm want to take Sparky's advice and use my large bearing 9"
axles and tubes.
Do I buy this mini spool and have my gear cutter shorten my axles
and spline them to suit the spool?.

http://www.ebay.com/itm/7-5-GM-7-625-10-Bolt-Mini-Spool-28-Spline-w-Moly-Cross-Pin-NEW-/221219108811?pt=Motors_Car_Truck_Parts_Accessories&hash=item3381afb7cb&vxp=mtr

Thanks.

Just checked and the spool housing ID is too small for the Ford axles. The complexity just ramped up.

[tauruck]

Necessity is the mother of invention and in my case this rear end debacle is a "MOTHER" of monumental proportions.

I suppose every land speed project has it's Achilles Heel and in my case it's the Caboose on this train.
No Grand Funk Railroad here (my all time best) and I'm on the outside looking in.

Tom Burkland is IMO, the guy!!!!!!.

I should have taken his advice, I do but I thought the gear cutter was a local genius.
All he did was tell me what I wanted to hear and I fell for his BS hook, line and sinker.
Not a good thing as I'm a fishing lure builder with a worldwide reputation.

I'm doing my own thing on the rear end and if it breaks so be it. It's racing and we all learn from our mistakes.

One South African mini spool mod, GM Ford Hybrid coming up.

I wont weld the spider gears but as the local saying goes "'n Boer maak 'n plan". Translated it means a farmer makes a plan.

Yes, my patio furniture used to be my living room furniture.