#10

08-07-2014, 11:22 PM

1RAMAIR1

Member

Join Date: Feb 2011

Posts: 75

Quote:

Originally Posted by comanchefirebird

I hope to learn a great deal as I plan to restore my 69 TA.

That makes 2 of us. (lol) Today we pulled the Rear Differential apart and found something unusual. The setup appears to have never been taken apart and the original GM part number stampings were found on the Ring Gear. The Build-sheet for the car says it came with 3:90 series gears. When we opened it up, the gears were 4:11. What are the chances that the Factory installed the wrong ratio gears for the car?

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