option documentation

[Bob R.]

Does anyone know of any services that can provide research as to the rarity of specifically optioned c2 cars? Hope this makes sense.

Thanks,
Bob

[Tom H.]

Re: option documentation

Hi Bob:

Some of the information you seek may already be known or published. Other statistics have to be extrapolated out to get "close"

We already know production statistics for individual options and RPO's as well as color break downs. Individual cars are not broken down other than with math as I mentioned before.

Any certain fact you are trying to nail down ??

[Michael J.]

Re: option documentation

As far as I know extrapolation from the numbers of different options, colors, etc. produced is the only way to get close. It works OK I think. My '66 Mosport Green Coupe comes out as 1 of 23 done with green interior, L79, and power steering for instance.

[Bob R.]

Re: option documentation

Thanks Tom and Michael,

Yes, I would like to know if my car is one of ? but I don't know what source to go to for verification.

Thanks guys.

Bob

[John H.]

Re: option documentation

Thanks Tom and Michael,

Yes, I would like to know if my car is one of ? but I don't know what source to go to for verification.

Thanks guys.

Bob

Bob -

There is no source for verification - the data you seek doesn't exist.

[Steven B.]

Re: option documentation

Bob, the guys are correct. What options and colors does your car have? A '67?

Steve

[Michael J.]

Re: option documentation

Bob -

There is no source for verification - the data you seek doesn't exist.

Right, all you can do is take a source like the Corvette Black Book and do the math on the various RPO options as a percentage of production of a coupe or roadster one at a time.

[Michael W.]

Re: option documentation

Right, all you can do is take a source like the Corvette Black Book and do the math on the various RPO options as a percentage of production of a coupe or roadster one at a time.

I did that exercise with my car and before I got half way down the option list the stats indicated that is was less than one of one and therefore didn't exist. I sure would like to have it back.

[Patrick T.]

Re: option documentation

I have my '67 listed on the C-2 Registry, the one that Rob started. I entered all the options my car has and then it gave me percentages of the total car's with that particular option. What I don't understand is why at the bottom of the tally, it says my car is 1 of 1? I can't believe that my car is the only one with these common options. PT

http://www.c2registry.org/index.php?job=ShowCorvette&car_id=1272&today=2009-12-02&uid=9364

[Michael D.]

Re: option documentation

...it says my car is 1 of 1? I can't believe that my car is the only one with these common options....

You can't multiply percentages against percentages. Keep going and you will eventually come to the 1 of 1 figure or even 0 of 1.

You can possibly get close with multiplying the Black Book figures, but close is all you can get.

BTW, my '68 also came out as 1 of 1. Ditto for my '80.

[Michael J.]

Re: option documentation

Yes, you can't get lower than 1 of 1, and it is not totally accurate of course when you get less than say 1 in 50 or so. But suffice to say that if you have a small number color, a small number engine, a coupe, and a few power options, yours is pretty rare. I always liked the Marti Reports that Mustangs and some other Fords have for them. Those are backed by actual production stats that were kept. Takes the uncertainty and guess work out of it.

[Michael W.]

Re: option documentation

BTW, my '68 also came out as 1 of 1. Ditto for my '80.

I think almost all cars will come out as 1 of 1, or less. That's what I was referring to above and is a good illustration of how inaccurate self-calculated numbers truly are.

Another 'fault' is that there is no bias put on option groups or types. People who bought power steering are likely to order power brakes also. People who bought those two are more likely to order auto trans and less likely to order a 4.11 rear end with M22, etc etc. Without this biasing the calculated numbers are useless.