My 69 had a 2:56 10 bolt open. in 1989, it went chunk, and I located about the same raito 10 bolt posi. Later, in 1981, I had an old rusted out 64 Chevelle Malibui Convertable that was on its last legs. A guy I worked with wanted the rag so bad that he could taste it. (Other than horse trading, I won't discuss how I got the rag, but I din't have a dime in it.)

Anyway, the guy had a 12 bolt posi from a 71 Nova, and he gave me the rear and $300 for the rag, and my 10 bolt posi. That was a **** good deal for me because those 12 bolts were gettin pretty scarce in those days. I've had the cover off three times, and there are no numbers on the gears. I tried counting the teeth, but along with spelling challenged, I'm also numerically challenged.

I did the ol spinner' roo and have determined it's either a 3:23 or 3:25. I had one of the best front-end, rear-end man in the industry go over the rear and asked him what was the raito. He, too, isn't that bright at computating numerals. (Your better professional mechanics aren't good at such things. The crooks are because they specailze on figuring how much they can screw you out of.) The guy ended up doing the spinner 'roo, and his guess was 3: 23 or 3:25.

The 12 bolt looks good under the car, and lots of people don't know that first generation Firedogs didn't have the 12 bolt option. So I don't bother to tell them it's not correct. I just say um-huh when they say "Wow! That's a 12 bolt! Is it posi?"