62 Vette: Need numbers help from the experts

[Toy4Hal]

OK group. here is my question. I'll preface it by saying I'm not trying to establish my 62 Corvette as a "numbers matching" car. I'm so far off from that it won't happen. In fact I just discovered that I have a Muncie 4 speed and not the BG T10 as was supposed to be in the 62!

That said, however, I am still trying to establish her "current identity". My question is the real axle numbers.

I have the "Corvette by the Numbers" book from Alan Colvin and it has helped me a bunch. But I'm struggling with this one.

The "stamped" code on the axle of my 62 Vette is "BK0718". According to the "book" I don't see how that fits ANY codes for Corvettes, for any years, unless the prefix letters are indicating a different plant.

The other data on the axle is: casting number 378912 which indicates late 61 and all 62 Vette posi unit. Another number is E2863. There is a large "P" on the axle which was used to designate it being a Positration unit.

So, my expert friends, anyone know what I got?

Thank you in advance.

Hal

 

[JohnZ]

The "E2863" casting date says it was cast and machined at Buffalo, so the diff is from a 1963 full-size passenger car (all Corvette diffs were cast at Saginaw and machined/assembled at Detroit Gear & Axle, and Saginaw castings all used a single digit for the year portion of the date code). The DG&A and Buffalo diffs were functionally interchangeable in the same housings. Note that axle "numbers" aren't checked in NCRS Flight Judging - just configuration and appearance.