Question on Dana 36 Gears
Thread Starter
Melting Slicks
Joined: Jun 2007
Posts: 3,389
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From: Poocakes loves teh sausage! N.E. Ohio
Question on Dana 36 Gears
I just bought this setup last night. The seller told me it was for a Dana 36. The gears are suppose to be 3.73:1. This unit was rebuilt with new gears and a rebuild kit in 1999 and never installed. The numbers on the gear are G05-878373C 41-11 USA F5 .
1. Does the left and right yoke just slide in?
2. Should I be worried at all about this sitting for 10 years?
1. Does the left and right yoke just slide in?
2. Should I be worried at all about this sitting for 10 years?
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Divide the ring gear teeth (41) by the pinion teeth (11) for your gear ratio. ( it is 3.73) It is possible for bearings to pit when sitting if not lubricated, but tear down is the only way to be certain.
The side yokes do just slide in but are held by a selective retaining ring that determines the end play, you should have a selection of them when you install the yokes so you can measure and set it correctly.
The side yokes do just slide in but are held by a selective retaining ring that determines the end play, you should have a selection of them when you install the yokes so you can measure and set it correctly.
Thread Starter
Melting Slicks
Joined: Jun 2007
Posts: 3,389
Likes: 0
From: Poocakes loves teh sausage! N.E. Ohio
The bearings look to be greased... all that I can see. I couldn't pass up this deal last night. The guy wanted $200.00 obo. When I saw the new gears I didn't even haggle with him.
Team Owner
Joined: Sep 2003
Posts: 25,397
Likes: 2,741
I'd say with the general appearance of the case it needs to have bearings replaced! The case is "rusted" and the finish on the bearings is substantially more fragile than just the cast case. Humidity and dampness were likely hard on it. I would say to confirm that you could remove the case from the housing and make a decision based on what you find there! Inspect the carrier bearings.
If it were stored indoors in a "home" environment it could be fine BUT then again?
You could maybe fill the rear "suspended" as it stands with "clear" kerosene to a level above the pinion, rotate the ring and pinion by hand many, many, many times and dump the kerosene back into light colored or clear container. What does the kerosene look like? Any discoloration you might as well do all the bearings, buy a new crush sleeve and pinion nut!
You "could also" decide by the old "reliable"! "The coin toss"!
If it were stored indoors in a "home" environment it could be fine BUT then again?
You could maybe fill the rear "suspended" as it stands with "clear" kerosene to a level above the pinion, rotate the ring and pinion by hand many, many, many times and dump the kerosene back into light colored or clear container. What does the kerosene look like? Any discoloration you might as well do all the bearings, buy a new crush sleeve and pinion nut!
You "could also" decide by the old "reliable"! "The coin toss"!
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
It really depends on what you use the car for. If you're just looking for a stop light warrior around town then the 3.73s will be great for you and I'd probably keep your stock converter. If you're looking to take the car to the drag strip then the 3.73s are way too steep for a relatively stock L98. For the strip I'd go with 3.07s and 2500 stall TC.
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Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
It really depends on what you use the car for. If you're just looking for a stop light warrior around town then the 3.73s will be great for you and I'd probably keep your stock converter. If you're looking to take the car to the drag strip then the 3.73s are way too steep for a relatively stock L98. For the strip I'd go with 3.07s and 2500 stall TC.
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
I would think it would be the other way around. For the strip, you want maximum acceleration and are not concerned about economy or freeway rpm. Go with the steeper gearset. For all around cruising, you would want the 3.07s. When my car was a street/strip car, I went with a 3.73 and was very happy. The converter was relatively tight (footbrake at 2100), and the car would launch hard and was a great cruiser. Now the car is a strip only car, I am running 4.30s and still with a tight converter (2100 foot brake) have 1.42 60s and run 10.60s. Willie
What works on your highly modded 406 (or 383) might not hold true on a nearly stock L98 with a pathetic power band.
Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
I know what you're saying and I agree with you in theory, but an L98 has a very low peaking power band as compared to many cars (LT1s, LS1s, etc). Steep gears get an L98 out of its power band way too quick. If you take a stock (or lightly modded) L98 with 3.07s and swap in 3.73s the car will turn a slower ET. The 60' might improve a bit, but you'll lose any gain, plus some, on the other end. There have been a few guys who have wrung every last bit of ET out of TPI cars and this has been the findings
What works on your highly modded 406 (or 383) might not hold true on a nearly stock L98 with a pathetic power band.
What works on your highly modded 406 (or 383) might not hold true on a nearly stock L98 with a pathetic power band.
Racer
Joined: Sep 2005
Posts: 449
Likes: 1
From: Victoria
Divide the ring gear teeth (41) by the pinion teeth (11) for your gear ratio. ( it is 3.73) It is possible for bearings to pit when sitting if not lubricated, but tear down is the only way to be certain.
The side yokes do just slide in but are held by a selective retaining ring that determines the end play, you should have a selection of them when you install the yokes so you can measure and set it correctly.
The side yokes do just slide in but are held by a selective retaining ring that determines the end play, you should have a selection of them when you install the yokes so you can measure and set it correctly.
Im about to fit a rebuild 3.07 pumpkin in my 89,I'm using the side yokes from my current 2.59.I thought I could just use the 2.59 retaining rings(obviously not):,I did not realise that the yokes had to be "set up.
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Selective retaining ring,how do I work out which one I need???
Im about to fit a rebuild 3.07 pumpkin in my 89,I'm using the side yokes from my current 2.59.I thought I could just use the 2.59 retaining rings(obviously not):,I did not realise that the yokes had to be "set up.
Im about to fit a rebuild 3.07 pumpkin in my 89,I'm using the side yokes from my current 2.59.I thought I could just use the 2.59 retaining rings(obviously not):,I did not realise that the yokes had to be "set up.
Get a Factory Service Manual.
Le Mans Master
Joined: May 2006
Posts: 9,226
Likes: 9
From: Irvine Ca
^^The Snap ring from hell that holds the shaft in place is sized and color coded???
Does that color stay in place???
If mine have no colors visible, should I assume they are Plain...050/1.27????
Does that color stay in place???
If mine have no colors visible, should I assume they are Plain...050/1.27????
