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June 12th, 2019, 08:52 PM
Replies: 7
Views: 574
Posted By monzaz

checking ratio

Remember this is a torsen / true trac type posi and you can not do the spin test like a traditional clutch or cone friction posi. Which has both wheels locked under no load.
June 12th, 2019, 08:49 PM
Replies: 7
Views: 574
Posted By monzaz

example 12 pinion into 41 ring is 3.41666666...

example
12 pinion into 41 ring is 3.41666666 Round up 5 or higher to the second decimal is 3.42
11 pinion into 41 ring is 3.7272727 Round up 5 or higher to the second decimal is 3.73

Hope this...
June 12th, 2019, 05:43 AM
Replies: 10
Views: 915
Posted By monzaz

???

You did not get us your info yet? How can we compare?
All Camaro Nova A-body ec are 5 on 4 3/4" wheel bolt pattern
MOST full size cars are 5 on 5 wheel bolt pattern .
You did not measure the...
June 11th, 2019, 10:00 PM
Replies: 7
Views: 574
Posted By monzaz

neat

10 BOLT 8.5 REAR
IT IS SOME FORM OF A TORSEN POSI (TRUE TRAC WORM GEAR POSI... )

I can not tell if that is old school first design torsen posi or New unit ... to me it looks old school first...
June 10th, 2019, 09:07 AM
Replies: 10
Views: 915
Posted By monzaz

Yes that is best if your car will be a driver......

Yes that is best if your car will be a driver... 10 bolt 8.5 camaro or nova are usually good fits and you can replace your leaf spring perches as necessary... That is what Tons of people do. lEAF...
June 8th, 2019, 08:59 PM
Replies: 10
Views: 915
Posted By monzaz

Well I guess will need some pictures...lol. Jim

Well I guess will need some pictures...lol. Jim
June 8th, 2019, 11:42 AM
Replies: 10
Views: 915
Posted By monzaz

Retro fit rears

Best thing we need is total width drum to drum

Wheel Bolt pattern 5 x 5 or 5 on 4 3/4" etc.

I assume this is leaf spring ? y/n
What is the spring perch center to center.

Jim
J D Race
May 29th, 2019, 07:03 PM
Replies: 5
Views: 1,186
Posted By monzaz

You buy the correct parts. There is NO...

You buy the correct parts. There is NO Adjustment. The seal is the adjustment IF the parts are not correct your screwed.
I am sure you can make shims etc. BUT the factory never had any adjustable...
May 29th, 2019, 12:16 PM
Replies: 5
Views: 1,186
Posted By monzaz

Press on bearing

Yes they are Press on bearings / BOLT IN AXLES is what they are nick named on the forums etc. All B O P rears have them from 1964-1972 and even into the 1973-1976 era. Then after that almost every...
May 28th, 2019, 04:56 PM
Replies: 5
Views: 1,186
Posted By monzaz

Tapered bearing or non tapered bearing

Tapered bearing or non tapered bearing?
Well that would all depend on the bearing type. OLD original Bower non tapered bearing you can tolerate they end play with no issues. A tapered bearing you...
May 16th, 2019, 07:26 AM
Replies: 5
Views: 400
Posted By monzaz

You will need to crack it open. Your just...

You will need to crack it open. Your just guessing any other way... Is the pinion nut good? Meaning does the pinion have any in out play at all? Even the slightest amount is not good. only...
May 15th, 2019, 08:12 PM
Replies: 20
Views: 844
Posted By monzaz

axle beaRINGS

As I read this it really appears that John is asking about the AXLE BEARINGS not the CARRIER bearings... so the answer is:
Yes 1967-68 31 spline sealed axle bearings are the same as 1967-1969 28...
May 12th, 2019, 01:15 PM
Replies: 11
Views: 444
Posted By monzaz

i THINK MOST PEOPLE JUST DO NOT UNDERSTAND THERE...

i THINK MOST PEOPLE JUST DO NOT UNDERSTAND THERE IS A life TO PARTS. yOU CAN NOT EXPECT A PART TO DRIVE FOR 50 YEARS ...ESPECIALLY IN a muscle car to just keep going trouble free. So to all - you...
May 10th, 2019, 11:10 AM
Replies: 20
Views: 844
Posted By monzaz

posi

Well you will need a pinion cross shaft and at least one spider gear as the thing started to fuse to the shaft...WHICH means the posi was not probably holding tight enough and will need to be looked...
May 10th, 2019, 10:45 AM
Replies: 11
Views: 444
Posted By monzaz

You have to look at the age of these parts too. ...

You have to look at the age of these parts too. 50 years of driving... Just buy new axles

I have them here for 125.00 each BARE
We can make them bolt in ready if you like also.

Jim
JD Race
May 10th, 2019, 10:42 AM
Replies: 6
Views: 500
Posted By monzaz

2146 vs 712146

2146 seal .460
712146 seal is .490
Always buy TIMKIN in this axle bearing set-up./

Jim
May 7th, 2019, 07:50 PM
Replies: 8
Views: 465
Posted By monzaz

1973 - 1977

You bought 1973-1977 - They are the most common A-body rears... They will not fit the 1972 and older.
Shoot some pictures of the rear we can ID it.
Will need the whole rear end shots with lower...
April 21st, 2019, 04:28 PM
Replies: 15
Views: 1,397
Posted By monzaz

3.08 gears

Only the GM 2 sets of Orig
https://cimg4.ibsrv.net/gimg/classicoldsmobile.com-vbulletin/1600x1200/img_8352_09bab33d0e3b36db0bfaaf58c69522e5af6f859c.jpg...
April 18th, 2019, 06:39 PM
Replies: 21
Views: 714
Posted By monzaz

Seal

All controlled by the axle seal.... THIS is why I keep saying that the thickness of this seal is critical. :) Jim
April 17th, 2019, 10:27 PM
Replies: 21
Views: 714
Posted By monzaz

Usa parts

Laugh-er.... well Not to knock good old USA parts...BUT the work force just ain't what it use to be anymore. You have to CARE about what you build to get quality...Just because it says USA does not...
April 17th, 2019, 10:26 PM
Replies: 21
Views: 714
Posted By monzaz

Sealed and oiled bearing

Brian, That is not the 1st and second OILED bearing design. That is just the early and late design bearings sealed bearing 6465 66 67 68 early 69 and oiled bearing late 69 70 all the way to 1976...
April 17th, 2019, 09:50 PM
Replies: 21
Views: 714
Posted By monzaz

Preload

Set9 / A9 bearing preload is all handled by the retaining plate seating against the 712146 SEAL THAT Is installed on the axle shaft between the retaining plate and the tapered bearing.

Reason the...
April 16th, 2019, 02:43 PM
Replies: 21
Views: 714
Posted By monzaz

wheel bearings

There are NO BALL bearing oil oiled bearing they are all seals for the BOP rear. 1970 ish is when Oiled bearings came into being used in the 8.2 and 8.5 rears.
Factory bearings started out being...
April 16th, 2019, 06:32 AM
Replies: 21
Views: 714
Posted By monzaz

Rock AUTO

bry593 - He said both kind of oiled bearings Tapered and barrel type. The A9 at one time were barrel type and came from the factory that way NOT tapered oiled. They switch later to a NEW design...
April 14th, 2019, 03:36 PM
Replies: 5
Views: 267
Posted By monzaz

spring perch

Pretty much the standard BOP late model perch. I will look.

I really do not see the rust?
April 12th, 2019, 09:11 PM
Replies: 5
Views: 267
Posted By monzaz

They will not look the same as GM original. If...

They will not look the same as GM original. If you show a picture of it (as there are 3-4 different designs gm used for the 1967 -1972 era. BOP usually used a Open style...Some pontiacs had a semi...
April 12th, 2019, 09:07 PM
Replies: 21
Views: 714
Posted By monzaz

?? whAT part number?

Both kinds? What part number are you looking up? I only see one correct they are all tapered?

Been looking for years nothing non tapered ... Maybe I am missing them?

Jim
April 12th, 2019, 09:00 PM
Replies: 21
Views: 714
Posted By monzaz

IF you are going to race and you have no idea the...

IF you are going to race and you have no idea the condition and if you actually have that many miles on the bearings you should replace them... You can not expect 165K out of wheel bearing let alone...
March 29th, 2019, 08:08 PM
Replies: 8
Views: 472
Posted By monzaz

should be a 1970 housing with oiled bearing axles...

should be a 1970 housing with oiled bearing axles You will need to find the axle tube suffix code (2 digit number letter code example : R2 SA TO T3 etc.) on the passenger back of axle tube...
March 29th, 2019, 07:15 AM
Replies: 3
Views: 277
Posted By monzaz

tire size

Tire size does affect the speedo also. Smaller tire will give steeper ratio increasing the speedo MPH spinning the cable faster and more diameter tire will give less ratio or slow down the speedo
March 18th, 2019, 04:49 PM
Replies: 7
Views: 464
Posted By monzaz

you tube videos

Please all be careful on the videos out there...lol. THAT is why I am so busy.... too many people making videos thinking they know what they are doing. If I have time it is a good laugh for an...
March 17th, 2019, 06:14 PM
Replies: 7
Views: 464
Posted By monzaz

That is a 10 bolt 8.5 Oldsmobile for sure. ...

That is a 10 bolt 8.5 Oldsmobile for sure. Should be easy to get any ratio posi etc.
Jim
March 17th, 2019, 06:11 PM
Replies: 7
Views: 464
Posted By monzaz

Engine options gear ratio

I have a web site set for people that want to give it a shot. Parts I think we had posi rebuild kit and gear pacakage deals or it could have been on V8 buick.com... Have to look in the for sale...
March 7th, 2019, 04:03 PM
Replies: 3
Views: 434
Posted By monzaz

spacer plate

You need the spacer plate between the flange and the retain plate ...it acts as the backing plate thickness...They come in most disc brake kit and are for the bolt in axle rears BOP usually.
I have...
February 25th, 2019, 05:47 PM
Replies: 3
Views: 226
Posted By monzaz

Swap

If the rear does not need to be original... It should be pretty easy to make another rear - I am sure the wheel bolt pattern is 5 on 5, 1/2 x 20 wheel studs.
You just need the over all width drum to...
February 23rd, 2019, 03:25 PM
Replies: 2
Views: 304
Posted By monzaz

Posi

Now Go Use that DIFF. :)
February 20th, 2019, 11:03 AM
Replies: 14
Views: 573
Posted By monzaz

build sheet

That is cool your still finding cars with build sheets...lol. Everything we ever got our hands on was already messed with. :) That is fun stuff to see where the sheets were put... Headliners,...
February 20th, 2019, 05:25 AM
Replies: 14
Views: 573
Posted By monzaz

picture 8.75

so it looks like this? But has a fill plug n the rear cover off to the passenger side of the cover. Yes?
...
February 18th, 2019, 10:35 PM
Replies: 14
Views: 573
Posted By monzaz

Usually b body platform got the 8.5 usually a...

Usually b body platform got the 8.5 usually a wagon got the 8.75 as stated.
How sure are you this vehicle has its original rear under it?
1978 -1987 and 89-96 B-body platform cars DID get 7.5...
January 21st, 2019, 08:44 PM
Replies: 13
Views: 680
Posted By monzaz

!2 bolt olds unit

WE (J D Race) modify the Yukon 8.8 ford unit DURA GRIP for 8.8 ford. Yes.
Every one use to use the Actual FORD trac lock ford 28 spline unit to do this as it was the lowest cost unit on the...
Showing results 1 to 40 of 500
 


 
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