Long Nose Diff

[TVeye]

Interested in a working long nose differential.

All ratios considered.

So Cal local pickup preffered.

 

M_

[man_mark_7]

Got one that I've never opened. Turns smoothly. I'm in MA though. Let me know if you strike out closer to home and I can open it up, check the ratio, etc.

[repoman]

I have one in Brea

[kbmb02]

PM sent.

[jfahuna]

Looking for open or closed?

I am in Van Nuys

[rstclark]

Looks like you have plenty of choices but I’ll throw my hat in the ring. I’m in Encinitas the diff is still in the car 

[jfahuna]

Have long neck open 4:10 gear ratio $350.

Good luck

J

[TVeye]

1 hour ago, rstclark said:

Looks like you have plenty of choices but I’ll throw my hat in the ring. I’m in Encinitas the diff is still in the car 

 

Not very many choices at all.

I had originally stated I was considering all (both) ratios.

All replies have been for a 4.11.

I am looking to replace a working 4.11 with a 3.64.

[man_mark_7]

I'm on the East Coast. I'm guessing shipping would be ~$50-75? I'll make a point to open it up and take a look at the ratio tomorrow.

[TVeye]

17 minutes ago, man_mark_7 said:

I'm on the East Coast. I'm guessing shipping would be ~$50-75? I'll make a point to open it up and take a look at the ratio tomorrow.

 

Don't go to too much trouble on my account.

If  it's original to the car, a '68 or '69 2002 will have a 3.64.

A '67 thru '69 1600 will have a 4.11 (automatic 4.10.)

[man_mark_7]

32 minutes ago, TVeye said:

 

Don't go to too much trouble on my account.

If  it's original to the car, a '68 or '69 2002 will have a 3.64.

A '67 thru '69 1600 will have a 4.11 (automatic 4.10.)

It was actually in the trunk of a '74 2002 along with a 4spd, two half shafts, and something else I can't remember which I purchased as a lot. I have been meaning to pull it open and list it anyway so this will be a good catalyst if you are not interested.

[rstclark]

Mine is actually an original to the car 1969

I haven’t checked but so suspect it is an open  364:1 

PM me if you have continued interest and we can figure out the details

[Conserv]

As @TVeyehas noted, U.S. 2002’s had 3.64 long-neck differentials from VIN 1660001 through VIN 1664750. VIN 1664750 would have been manufactured in the last half of January 1969.

 

U.S.-bound 1600-2’s had long-neck differentials through VIN 1567845, which would have been manufactured in late January or early February 1969. It is not entirely clear to me when the 4.10 was utilized and when the 4.11 was utilized, or why there might be two virtually identical rear axle ratios. The Owner’s handbook (photo below) shows:

 

1. The 4.10 has 41 teeth on the ring and 10 on the pinion, with a Gleason contact pattern.

 

2. The 4.11 has 37 teeth on the ring and 9 on the pinion, with a Klingelnberg contact pattern.

But the parts book gives me ideas. To The parts book only shows the 4.11 (actually a 4.111) on a page, 33/9, that displays an exploded limited slip differential (see pages 33/9 and 33/10) whereas the 4.10 appears on page, 33/8, which displays an exploded open differential. Perhaps that explains the two virtually-identical ratios.

 

 (“AT” in the parts books stands for “Austauch-Nr”, which they also translate into “Exchange part No.”. And AT precedes all three ratios that appear to be compatible with an open long-neck differential: 4.10, 3.90, and 3.64, as shown on page 33/1. Thus, factory exchange differentials were available in all three open-differential ratios.)

 

The list of ratios that appear to be compatible with the limited-slip long-neck differential is impressive: 5.86, 5.29, 4.75, 4.375, 4.22, 4.11, and 3.89.

 

I suspect that the number of U.S.-bound cars equipped at the factory with limited-slip differentials is small. Very small!

 

So, after you’ve all counted your ring and pinion teeth, what are you finding? 4.10’s? 4.11’s? Does anyone have a 3.90 long-neck?

 

Regards,

 

Steve

 

[RussTii]

No, but I do have a 4.22 Long neck Diff. Came out of a 1600 racecar.

[jfahuna]

4:10 sopld sunday