What is a 3.50 posi in a modular case worth?

[Rsanter 152]

Have one, thinking about selling.

What are they worth

 

Bob

[mystangalang351 12]

There is a guy here that has been tormenting me with selling it,first yes then no. He wants 350-400 depending on what day. I need one if you want to sell

[1969_Mach1 333]

Is it 28 or 31 spline? Does it also have the Daytona pinion housing? What is the condition? Ring and pinion gears still in good condition? They are not too easy to find these days.

[Rsanter 152]

I need to check the splines but I think it's a 28

I haven't really looked at it for a while.

It came out of a friends car and was working at the time

 

No, not a Daytona pinion

 

Bob

[prayers1 153]

IMO, if it's a 28 spline trac-lok rear and all you have to do is install it, then it's well worth the $500.

[maxum96 32]

If you you have to have a nodular 9" 3rd member, get the Strange Pro Nodular version. It looks almost identical to the Ford N case and it's much beefier. This is what I run with a Daytona pinion support. Personally I feel it's not worth it to spend the money for an original N case unless you were needing it for an accurate restoration. The originals are all over 40 years old and probably been beat on in their lives. The Strange N case is much stronger than the originals ever were. Notice how much thicker the area around the pinion support bearing is with the Strange case? Also the carrier bearing area is thicker with much thicker caps. Plus metallurgy is better today than 50 years ago.

Strange N case

 

http://www.summitracing.com/parts/str-n1905

 

 

 

Ford N case

 

 

 

 

 

My rear end

 

Edited December 21, 2014 by maxum96

[PaleRider 12]

I paid 800 for a rebuilt center section on ebay for 8 inch. So sounds like a good deal

[1969_Mach1 333]

IMO, if it's a 28 spline trac-lok rear and all you have to do is install it, then it's well worth the $500.

 

You are probably in the ball park. Perogie's lists a used original Nodular Case for $495. So $500 for a complete 28 spline trac-lok carrier in an original Noduler case that may or may not seed some attention is fair.

[RPM 1,190]

I just picked up a 9 inch nodular 31 spline traction lok for $325. Probably depends on how broke the seller is.

 

Bob

[1969_Mach1 333]

RPM, $325 was a good buy. Sometimes you get lucky and the item doesn't have much value to the seller.

[Rsanter 152]

Update

Pulled it out today. It appears that it is not a posi as I had been told it is a open 4 pinion unit with 31 splines

Based off this new information what do,you guys think it's worth?

Not sure what I want to,do,with it but most likly,I will sell or trade it

 

Bob

[mustangmike6996 34]

IMHO an open diff isnt worth much because there arent too many people who want them. I have seen the cases go for really cheap (50-75 bucks) and I have seen them sell for higher too but they normally sit for a long time.

[RPM 1,190]

Nodular case, good.

3.50:1 gears, good.

4 pinion, good.

Those are all great selling points. I certainly wouldn't give it away. If a guy ads a rebuilt traction ok he's got a great and popular set up. I wouldn't sell it for less than $300, unless I really needed the cash.

 

Bob

[Rsanter 152]

I need the space more than I need the cash. I figure I won't be using it so I should pass it to someone that will

 

The other option I have is that I have a spare case C7 low nodular unit.

Would I be better off swapping the carrier and gears into that and selling it for someone to use and then sell the nodular unit bare for someone to set up with a posi

 

And I am able to do the swap myself and set the gears myself so it won't really cost me money, just some time

 

 

 

Bob

[ashleesmach1 28]

If you you have to have a nodular 9" 3rd member, get the Strange Pro Nodular version. It looks almost identical to the Ford N case and it's much beefier. This is what I run with a Daytona pinion support. Personally I feel it's not worth it to spend the money for an original N case unless you were needing it for an accurate restoration. The originals are all over 40 years old and probably been beat on in their lives. The Strange N case is much stronger than the originals ever were. Notice how much thicker the area around the pinion support bearing is with the Strange case? Also the carrier bearing area is thicker with much thicker caps. Plus metallurgy is better today than 50 years ago.

Strange N case

 

http://www.summitracing.com/parts/str-n1905

 

 

 

Ford N case

 

 

 

 

 

My rear end

 

 

this an awesome homemade cradle COOL!

[ashleesmach1 28]

I have had an N case 3:50 4 pinion Trac lok 31 spline rear end in my car for years. it works great! I had to have the posi unit rebuilt once. I paid about $ 400. for it. If I was doing hard core racing I would go with the strange unit in a heartbeat. Mostly I just drive on the street. But I love have that rear in the car. the stock rear was 3:00 open thing... good for economy but not for fun

[MikeStang 247]

I Bought my N Case 4 Pinion 28 Spline Posi For 200 needing a rebuild...

I swapped to 3.25 Gears and rebuilt it myself which was about another 400 in parts.

[maxum96 32]

this an awesome homemade cradle COOL!

 

 

Thanks. Cost me less than $25 to build (1" square tubing and casters from Harbor Freight). I used it as an excuse to teach my son in law to weld. I use my motorcycle jack to lift the rear end in and out of the cradle. That's why the rear is so open.