Rear Axle Code - Page 2 - Chevelle Tech
Transmission & Driveline Transmissions and Differentials

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post #16 of 21 (permalink) Old Aug 20th, 19, 11:23 AM
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Re: Rear Axle Code

Eaton 10bolt posi units are readily available for these rears. We recently added on to my son's 68 4dr with a crate 350 and wide ratio Muncie. His car was also originally a 307/PG car. It's now somewhat of a sleeper, with factory air cond.



























Oh ya, and another thing that I like to do when I have a rear out of the car, is to add a magnetic drain plug. The LAST year Chevy installed a rearend drain plug was 1961.

I drill and tap for a 1/2in fine thread plug (same plug as used in oil pans). Then I use a die grinder with a sanding disc to make the area around the hole smooth and flat.




















I also install new buishings for the trailing arms while I have the rear out of the car. I made up a puller from misc parts, old bearing races, a length of all thread, etc, that I had around the shop.







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post #17 of 21 (permalink) Old Aug 20th, 19, 12:00 PM Thread Starter
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Re: Rear Axle Code

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Originally Posted by DZAUTO View Post
Eaton 10bolt posi units are readily available for these rears. We recently added on to my son's 68 4dr with a crate 350 and wide ratio Muncie. His car was also originally a 307/PG car. It's now somewhat of a sleeper, with factory air cond.



























Oh ya, and another thing that I like to do when I have a rear out of the car, is to add a magnetic drain plug. The LAST year Chevy installed a rearend drain plug was 1961.

I drill and tap for a 1/2in fine thread plug (same plug as used in oil pans). Then I use a die grinder with a sanding disc to make the area around the hole smooth and flat.




















I also install new buishings for the trailing arms while I have the rear out of the car. I made up a puller from misc parts, old bearing races, a length of all thread, etc, that I had around the shop.









Man, my wife would love me disappearing into the garage for a month or so! Thanks for the input. Iím a little intimidated by installing new ring and pinion but would love to give it a shot.


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post #18 of 21 (permalink) Old Aug 20th, 19, 12:53 PM
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Re: Rear Axle Code

I would install some kind of overdrive trans. Makes street driving a lot more fun.

How about 3.73 gears and a 200R4 ? That would be a fun combo.

Great acceleration and good cruising too.

It takes special tools to work on a 10 or 12 bolt. I would ask around , maybe someone on craigslist ? I wouldn't do that myself. It's enough of a PITA to pull and reinstall that 10 bolt.
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post #19 of 21 (permalink) Old Aug 20th, 19, 1:14 PM Thread Starter
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Re: Rear Axle Code

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I would install some kind of overdrive trans. Makes street driving a lot more fun.



How about 3.73 gears and a 200R4 ? That would be a fun combo.



Great acceleration and good cruising too.



It takes special tools to work on a 10 or 12 bolt. I would ask around , maybe someone on craigslist ? I wouldn't do that myself. It's enough of a PITA to pull and reinstall that 10 bolt.


I would love that. I just had this powerglide rebuilt though. I had the engine rebuilt so I wonít be able to do anything that is very expensive for a while. I do want to do 3.73 though. If I could find a 200R4 at a good price it could work out.


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post #20 of 21 (permalink) Old Aug 20th, 19, 7:25 PM
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Re: Rear Axle Code

I hate to add insult to injury, but it is against my religion to have a car with an auto tranny------------and I absolutely refuse to offend my pastor!
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post #21 of 21 (permalink) Old Aug 20th, 19, 7:42 PM Thread Starter
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Re: Rear Axle Code

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I hate to add insult to injury, but it is against my religion to have a car with an auto tranny------------and I absolutely refuse to offend my pastor!


I know. I want to convert it but it may be a few years before I can do that. Especially after this engine rebuild.


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