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Old January 27th, 2012, 06:18 AM   #1 (permalink)
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12 bolt OLDS 'O' Type posi units

I have NEW Eaton type posi unit that fit all 3.08 3.23 and aftermarket 3.42 and 3.90 Richmond gears. The most popular gears wanted.

>>>>>>>>>>> 489.00 NEW <<<<<<<<<<<<

Also will have a few 2 series 2.56 2.78 posi units available soon.
Reconditioned units GM 379.00

Also have 3 series (3.08 3.23) carrier reconditioned units 325.00


======== WINTER RESTORATION FREE SHIPPING SPECIAL!!!! =============
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Old January 27th, 2012, 04:31 PM   #2 (permalink)
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Will any of these fit a 8.2 housing?

Quote:
Originally Posted by monzaz View Post
I have NEW Eaton type posi unit that fit all 3.08 3.23 and aftermarket 3.42 and 3.90 Richmond gears. The most popular gears wanted.

>>>>>>>>>>> 489.00 NEW <<<<<<<<<<<<

Also will have a few 2 series 2.56 2.78 posi units available soon.
Reconditioned units GM 379.00

Also have 3 series (3.08 3.23) carrier reconditioned units 325.00


======== WINTER RESTORATION FREE SHIPPING SPECIAL!!!! =============
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Old January 27th, 2012, 04:36 PM   #3 (permalink)
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not to steel the thread but....dre, i still want to see a video of the engine running. just like to see my old engine brought back to life.
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Old January 27th, 2012, 04:43 PM   #4 (permalink)
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Eric, she's not running yet. Decided to do a frame off and have the block sent to a different machine shop. My neighbor had some issues with his block and I wasn't comfortable. It's going to a hi performance shop in about two weeks. Frame is painted, now working on the suspension and getting parts for the rear end together.
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Old January 28th, 2012, 08:26 PM   #5 (permalink)
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I need a 3:23 rear gear/pinion for my 70-442. Let me know if you can help.
thanks
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Old January 28th, 2012, 08:34 PM   #6 (permalink)
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Jim - Email sent.
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Old January 30th, 2012, 06:28 PM   #7 (permalink)
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i need a posi for my 323, 23139 zip code what is shipping
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Old January 30th, 2012, 09:19 PM   #8 (permalink)
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posi shipping

15.00 to all US 50 states
excludes PR VI etc.
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Old January 30th, 2012, 09:25 PM   #9 (permalink)
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10 bolt 8.2

Quote:
Originally Posted by dre View Post
Will any of these fit a 8.2 housing?
10 bolt 8.2 posi units are as follows

NEW Eaton unit (3.36 3.55 3.73 3.90 4.33) 429.00
NEW Auburn unit (3.36 3.55 3.73 3.90 4.33) 409.00
NEW Auburn unit (2.93 3.08 3.23) 409.00

Reconditioned factory GM unit (2.93 3.08 3.23) 299.00

Factory gears 2.93 - 110.00
Factory gears 3.08 - 130.00
Factory gears 3.55 - 150.00

Aftermarket 3.55 - 279.00
aftermarket 3.90 - 249.00
aftermarket 3.73 - 259.00

Jim
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Old January 30th, 2012, 09:51 PM   #10 (permalink)
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Do you include the 'whale oil' posi additive if someone buys a R+P and Posi unit as a package??
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Old January 30th, 2012, 10:09 PM   #11 (permalink)
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Quote:
Originally Posted by monzaz View Post
======== WINTER RESTORATION FREE SHIPPING SPECIAL!!!! =============
Jim you rascal! Should have waited to buy mine! Naw, You gave me a great price; I got no worries. Sounds like some more of us are going to end up with sweet posi rides soon

EDIT: Hocus Pick! I just went back and looked at the thread title. These are for O 12bolts. Mine was corporate 10 bolt. I feel silly now...
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Old January 31st, 2012, 05:37 AM   #12 (permalink)
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These are nice units guys.His machinist can get things done a lot quicker than mine.
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Old January 31st, 2012, 05:42 AM   #13 (permalink)
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Allan tells me that you do great work!

What's the difference between Factory and Aftermarket? Sometime in the sort-of future i'd be looking for a Posi to replace my 2.73 peg-leg in the rear.

Any suggestions? Not sure if I'd like to keep the gear ratio the same. I'm still in the debating stage..


Quote:
Originally Posted by monzaz View Post
10 bolt 8.2 posi units are as follows

NEW Eaton unit (3.36 3.55 3.73 3.90 4.33) 429.00
NEW Auburn unit (3.36 3.55 3.73 3.90 4.33) 409.00
NEW Auburn unit (2.93 3.08 3.23) 409.00

Reconditioned factory GM unit (2.93 3.08 3.23) 299.00

Factory gears 2.93 - 110.00
Factory gears 3.08 - 130.00
Factory gears 3.55 - 150.00

Aftermarket 3.55 - 279.00
aftermarket 3.90 - 249.00
aftermarket 3.73 - 259.00

Jim
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Old February 1st, 2012, 06:05 AM   #14 (permalink)
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posi units

Factory - units are always cone type and normally made to do regular driving as this was factory equipment and always had a compromise between performance and longevity in the wear department.

Aftermarket - usually finds the weak spots and improves in that area and gives you more preload and grip Plus the material is better design parts better for better strength to handle the torque and horsepower to the ground.

NEW unit also come with manufactures 1 year warranty from defects.

IF you are 12 bolt olds and you are keeping the stock 2.78 (2.73) we do make units for it. There is sometimes a wait time for the building of them. I have 3 being made right now and with the out look of gas being 5.00 a gallon I am looking to make more. They are selling well.

If you have a 2.78(2.73) Pontiac Buick Oldsmobile 8.2 2series are not available aftermarket - we will need to find a 2 series factory unit.... we have done one BUT again it will take more money as there was alot of machining to the unit we needed to use to make it work.

Most of the time if your willing to pay the large chunk of money... I can usually figure iout a unit to work....BUT you the customer have to weigh that out how badly to really need to have it. lol.

MY JOB IS TO TRY TO FIGURE OUT A REASONABLE WAY TO GET POSI IN TO YOUR RIDE...WITH OUT PAYING A ARM AND LEG.

IF you think your muscle car posi unit are expensive you really need to check out the imports they pay 1500-3000 for posi unit....!!!! CRAZY!!!

i did a 370 Z (or something like that) and the total cost for 4.09 gears posi and bearing (parts alone ) were $2750.00 bearing kit was 550.00 woof! Everything came from nippon Japan.... so there was shipping on top of that. GOD!

Any way always ask brian or I will do our best to always help you out with any questions.

Jim
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Old February 1st, 2012, 02:55 PM   #15 (permalink)
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attention

Please check your PMs so we can finish off our business on a reconditioned 3.08 / 3.23 Type O posi unit & installation kits etc.

thanks

dave
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1972 442 524cid BBO 10.92 @ 122.1mph @ 3950'
1987 442 470cid SBO 11.33 @ 116.5mph @ 5350'
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Old February 29th, 2012, 04:23 PM   #16 (permalink)
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Good Seller

Posi carrier & parts arrived in Calgary today for the Type O rear end in my gold 1969 442.

Parts were fairly priced, well packaged & shipped at cost. Seller is reliable & communicative. I recommend Jim Mitschke to other board members.

The parts will be installed in April. I will post a burnout pic soon after.
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1965 442 White 461cid BBO Richmond 5 speed
1970 Cutlass W-31 Green Auto 14.47 @ 99.7mph
1972 442 W-30 Radiant Green M-20 with 3.73s
1972 442 524cid BBO 10.92 @ 122.1mph @ 3950'
1987 442 470cid SBO 11.33 @ 116.5mph @ 5350'
1980 GMC 468cid BBO 14.73 @ 93.1mph @ 6000'

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Old February 29th, 2012, 05:39 PM   #17 (permalink)
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I second that opinion of Jim's work. He has reconditioned an original 2 series posi for me and I also bought one of his new Eaton 3 series. Both were delivered on time and on budget.
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Old February 29th, 2012, 07:41 PM   #18 (permalink)
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What can I say? X3! Jim is a pleasure to work with. I also found his pricing and shipping costs to be excellent. My posi it a series 2 reconditioned 10 bolt though
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Old May 10th, 2013, 08:41 PM   #19 (permalink)
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Thank yous

Just wanted to thank you for the referrals / complements. Helps keep me going when things get overly busy and hectic. Thank You I appreciate it. Jim Mitschke
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Old May 11th, 2013, 08:27 AM   #20 (permalink)
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Jim I have a few questions:

1) What manufacturer for the clutch pack and "S" spring? USA made?

2) What lb. rating for "S" spring?

3) Are any of the parts, pinion/side gears, case, pin, etc. checked for cracks or fractures? Visual or mag. ?

I have three (3) 70' "O" type rears with the 3.23 ratio, but non-posi., (open) that came out of Rally 350 s that I stripped for parts. Before I list them for sale I may want to buy three reconditioned pois. units from you and install them. It may make them more "attractive" to sell and bring more $$$.

thanks for any consideration you may get these questions,
dave b.
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1970 F-85 2dr. sport coupe W-31 4 speed - - paint code (rally red) frame off restored

2011 Hemmings Muscle Machine of The Year award

2011 Hot August Nights, Reno, NV
3 "Best of Show", 3 nights in a row, at 3 different casinos, and "Best Restored Stock Car" award. $2,500 in cash and $500 in prizes.

1970 Cutlass "S" 2dr. sports coupe (post) race car, built 461 CI BBO, 7:02 @ 97.0 mph in the 1/8 and MORE lower ET s in the future!
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Old May 11th, 2013, 08:40 AM   #21 (permalink)
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The posi units are modified 8.8 Ford units,just like what SuperCars and other vendors sell,but better price.The clutches are a composite material,and the spring is 300lb.
The other units are Yukon or Eaton,and also started out as an 8.8 unit. These have the 4 springs and plates,and have composite clutch of a different material.Also a good unit.
For a better,more aggressive application,get the original style knurled steel clutches,and tune the unit.

Last edited by 507OLDS; May 11th, 2013 at 08:44 AM.
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Old May 11th, 2013, 08:56 AM   #22 (permalink)
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Thanks for the info Brian, however I was asking about the reconditioned original used "O" type posi. units, not new !
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former olds employee in lansing 1968-73 bldg. 70

1970 F-85 2dr. sport coupe W-31 4 speed - - paint code (rally red) frame off restored

2011 Hemmings Muscle Machine of The Year award

2011 Hot August Nights, Reno, NV
3 "Best of Show", 3 nights in a row, at 3 different casinos, and "Best Restored Stock Car" award. $2,500 in cash and $500 in prizes.

1970 Cutlass "S" 2dr. sports coupe (post) race car, built 461 CI BBO, 7:02 @ 97.0 mph in the 1/8 and MORE lower ET s in the future!
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Old May 11th, 2013, 08:58 AM   #23 (permalink)
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His reconditioned units are the Ford units. Not the O-axle 671 units.
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Old May 11th, 2013, 09:11 AM   #24 (permalink)
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OK, thanks Brian. Do you know if he mags the cast iron parts, pinion/side gears?
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former olds employee in lansing 1968-73 bldg. 70

1970 F-85 2dr. sport coupe W-31 4 speed - - paint code (rally red) frame off restored

2011 Hemmings Muscle Machine of The Year award

2011 Hot August Nights, Reno, NV
3 "Best of Show", 3 nights in a row, at 3 different casinos, and "Best Restored Stock Car" award. $2,500 in cash and $500 in prizes.

1970 Cutlass "S" 2dr. sports coupe (post) race car, built 461 CI BBO, 7:02 @ 97.0 mph in the 1/8 and MORE lower ET s in the future!
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Old May 11th, 2013, 09:11 AM
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