Won't the 3.23 gears fit the carrier that now has 4.11?

Why can't I attach pictures any longer? When I click on select a file, nothing happens.

Worked for me. Use the "attachment manager" at the bottom of the reply box under "Use Full Editor"

I logged in as you and used Full Editor and it worked on my mobile phone using Safari. Let me know some details such as web browser and such to see if I can recreate issue.

I get to the "Select a File to Attach" and select that picture in my photo file. When clicking on "Select a File to Attach," the file does not appear on that screen. I've also attempted to drag the file from the file window to the attachment window without success.

This seems strange since I've attached many pictures using the same method in the past.

Bocoogto, I got to wondering about this. And it looks like bop 10 bolts had three carriers.
One for 2.76 and lower. One for 2.94 to 3.23. And one for 3.31 and higher.
That's from Hemming Motor news.
Ron
CME469

As I said, the ring gear looks really thick compared to a factory one. I suspect someone put aftermarket 4.11 gears in a factory rearend that may have had 2,93m 3,08, or 3.23 gears in it.

Is there any way I can ID the carrier to see if 3.08 or 3.23's will fit?

bocoogto, You might be able to I D the carrier by the housing (if its the stock carrier) by checking the numbers that should be near the rear and center
of the drivers side axle tube. The left backing plate should also have a number on it.
But to be sure, look for a number on the carrier. You'll have to take it out anyway.

I assumed you were working on a bop 8.2. If its a GM 8.5 I think the number is on the right side.Not sure.
I would be interested in what you find out!
Ron

It's a GM 8.5, which means it was not original to this '68. I will look for a casting number on the housing.

Thanks.

Sorry, I didn't have access to the car since the last post.

For the different ratios offered in the 8.5 rearend---was the housing always the same, with the differences being in the carrier?

I think so.

You sure it's not a 8.2?

Here is a picture with the cover on. It's definitely a 8.5.

I notice today the read count is 86,928. Is this an actual number? If so, why is it so high? No other threads are anywhere near that many reads.

Here is the finished product leaving a car show yesterday in Kaukauna, Wisconsin. Two happy campers!!

https://youtu.be/BrJw9eHPop0

Looks great!

Can someone help me with drag slick/wheel possibilities? I have two 15X7 Rally II's I could use or various 14X6 steel rims with various offsets.

This car should have at least 9" tread on the ground and about 27" or more diameter due to the 4.11 gear.

It's been 40 years since I researched buying drag slicks for my GTO. I had good luck with Firestone 9" wide x 28.5 diameter X15 rims. I wish I had those to check clearances.

I have cheap steel wheels from summit. 15"×8" with 4 1/2" backspace and I'm using 28"×9" slicks, can fit a 10" slick no problems. I have a chevy 12 bolt rear that's 62 1/2" wide axle flange to axle flange.
Hope that helps

Thank you. 15X8" wheels should be no problem. Now, if I can find a pair of slicks at a reasonable price.