Rearend

[Silversport 63]

Good morning guys is there anyone out there that can steer me in the right direction on the two different carriers that came in the 63 impala ss I want to go up in gear size some info says certain gears won't work in certain carriers thanks

 

[Don Jacks]

What gear do you have in there now and what are you wanting to change to? If you have 3.08's and you want to go to 3.73 you'll be good.You'll have to go a different carrier if you want to go to a 4.11 or 4..56.There in some cases thicker gears to make up the difference but they're getting hard to find.There are also spacer rings made for this but don't get them near any drag strip,especially with a stick car.

 

[62BillT]

I'm still not sure how he did it, but I had 4.11 aftermarket gears professionally installed in a 3.08 Posi rear. That rear was bullet proof. Had about 100 high rev burnouts on it and probably at least 500 power shifts (foot to the floor and stays there) with my M-21 Muncie.

I questioned him on the exact same info above, but he reassured me that it would be no problem, and he was right, lol.

 

[Don Jacks]

I'm still not sure how he did it, but I had 4.11 aftermarket gears professionally installed in a 3.08 Posi rear. That rear was bullet proof. Had about 100 high rev burnouts on it and probably at least 500 power shifts (foot to the floor and stays there) with my M-21 Muncie.

I questioned him on the exact same info above, but he reassured me that it would be no problem, and he was right, lol.

He most likely used the aftermarket "thick" ring ear that was made for just such a swap.Those are getting hard to find.Once rolling the ?"power shift" isn't what breaks these rear ends.Sticky tires,high rpm stick shift,high torque automatics especially with a good converter and they go bang.

 

[61belairbubbletop]

Oh God, how I long for a wide open, pedal thru the floor, right hand death grip on that shifter, power shift !

 

[Don Jacks]

Especially a 1-2 shift!

 

[Skip FIx]

I can tell you a thin gear and a spacer plate with 4.10s I jumped on it and ripped every ring gear bolts out of it! Next one I found had a thick gear.

 

[62BillT]

He most likely used the aftermarket "thick" ring ear that was made for just such a swap.Those are getting hard to find.

The only other thing I can remember is that they were Shaffer Gears. Not even sure if they still make them today.

Once rolling the ?"power shift" isn't what breaks these rear ends.

Except with non-posi's in my '62, lol.

It was a 283 3-Speed at the time and I went though 6 Rears. Can't remember every one, but I know at least a few broke banging 2nd Gear. Also went through 6 Transmissions and 3 Driveshafts, lol. All in less than 2 years.

In my '56 Nomad, with a 327, 4-Speed and the 4.11 Posi as described above, I never broke a thing in all of 10 years.

 

[La Hot Rods]

Sounds like you need to tune up that 327

 

[62BillT]

Sounds like you need to tune up that 327

It was pushing about 325 HP, just about 1 Horse per Cube. I beat everyone on our back road 1/8 Mile strip except for my friend's '61 Corvette with a 350, 4-Speed. I got him off the line, but he would beat me by a fender, lol.

They were good 'ol days.

 

[Silversport 63]

I think I have 308 or 336 not sure I had a nitro gear posi unit retrofit in my none posi case and it's got a small leak coming out the pinion seal so if I'm taking it out I may as well change the gears right thanks for the replays guys there's a bunch off good guys on this site

 

[Fuzz1957]

Be sure to mark and count the turns when taking off the pinion nut, so you can put it back on the same.

Fuzz

MAGA

 

[Silversport 63]

Are you saying that I can change the pinion seal without taking out the center section

 

[La Hot Rods]

It can be done without removing the center section. It is tricky to do and not overtighten the pinion nut.
Sometimes it's better to remove the center section and get a new crush sleeve so you can set the pinion bearing preload.

 

[Silversport 63]

Is there anyone out there that can tell me if 63 and 63 ebrake assembles are interchangeable

 

[Don Jacks]

Are you saying that I can change the pinion seal without taking out the center section

Oh yes,,I've done many back in my day.63 and 63 ebrake stuff? Please clarify.