Driving Project 69 Chevelle L78

[sixt9rsx33]

Originally Posted by Mr70

Based on what I've seen in the auction,I believe you have the correct buildsheet and someone changed the rearend housing & added the correct 4.10 gear.Plus the way the seller phrased it,screams the same,asing "A" & not "The".
...A 12 bolt posi rear (4.10 gears) is still in the car and documented on the build sheet to be correct.

I believe now that the car has 3.31 gears per the stamp on the axle tube. So what is weird to me is the the build sheet has KK, and the rear end is CF with a axle tube stamp of 0412 that is right in line with all the other stamps of the 052 build on the Trim Tag. If the axle tube stamp was not in line with the build of the car it would obvious it was flipped out. Perhaps the original owner early had the rear end changed?
Thoughts?

[Viz]

Not an answer to your axle question, but on my 69 that I bought new, and still have, I ordered the K85 63 amp alternator. It's on the build sheet too, but the car came through with a 37 amp alternator. I didn't discover that until a few years later. I suppose there are other stories about mismatched parts vs build sheets.

Viz

[Mr70]

Originally Posted by sixt9rsx33

I believe now that the car has 3.31 gears per the stamp on the axle tube. So what is weird to me is the the build sheet has KK, and the rear end is CF with a axle tube stamp of 0412 that is right in line with all the other stamps of the 052 build on the Trim Tag. If the axle tube stamp was not in line with the build of the car it would obvious it was flipped out. Perhaps the original owner early had the rear end changed?
Thoughts?

Anything was possible,but unless you have a signed affidavit or any other docs stating this car was built with a 3.31,it will be believed that it is not the original born with rearend housing,based on the accompanying buildsheet showing 4.10.
People have been looking for correctly dated replacement components for their cars since these cars rolled out off the assembly line,and still are today for this very reason.