Does Anybody Know...

[dh88hms]

How many 1969 Camaros were built with both RPO codes Z22 and Z27 (RS/SS)?

[Mr70]

According to Chevrolet records,37,773 were built w/Z-22...34,932 were built w/Z-27.
I don't think they kept exact records of how many Camaros got both of those together,other then the 3,675 (Z11) pacecars replicas that did,so if your including them,start from that figure up.

[al8apex]

As stated above, there is no way to determine how many combinations of RPO's were built. There are no records of that. Same for number of colors with any RPO (like how many black z28's were built). Massaging the numbers through percentages is not accurate either.

[1969z280]

Extrapolation is as close as you're going to get to the number. It's not the actual accounting but it will be a reasonable estimate. Example: if half of a production run (50%) came with a certain option and only (10%) came with another option, it is reasonable to assume only 5% came with both options.

[dh88hms]

Thank You guys for your help.

[Unreal]

The problem with using that method, is that it is easy to option out to "one of none."

[iluv69s]

A good example of the problem with extrapolation is my 67 Z.

Assuming only 602 Z's made...and my car had the ultra rare shoulder harness...omly 400 and some made..(I do not recall exactly)....

the problem with extracting the percentages is that apparently most of the cars with the shoulder harnesses were the Z's and 375 hp cars...for good reason !!!

[1969z280]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Unreal</div><div class="ubbcode-body">The problem with using that method, is that it is easy to option out to &quot;one of none.&quot;
</div></div>

One of none?

[al8apex]

the extrapolation method is NOT accurate

ask a math whiz why

[1969z280]

Extrapolation will provide a reasonable estimate when no other data is available. Accuracy is relative and better than guessing, suggesting or supposition.

[CanCOPO]

You can use the typical &quot;Car Show&quot; methodology
ONE of ONE
20000 made
300 had consoles
200 were datona yellow
100 had Wide Oval tires
50 had an L78
25 had a red interior
6 had an underhood light
1 was built on the first Tuesday before the dark of the moon.

By the way, no documentation but I have 82 signed owner statements.

Super Chevy in Houston this year. A guy with a hugger orange COPO clone. As I was looking at the car a bystander asked him if it was a ZL1. He said no. It's a ZL2 as this was the iron block version. I started discussing the car with him and asked if it had a BE rear end? He said no, it's a 12 bolt. Two weeks ago I saw the car at the Corvette and Chevy show here in Houston being represented as a real COPO.

[bergy]

Extrapolation isn't perfect, but what other estimating method is there? My '69 BB Pace Car has Canadian documentation showing shoulder belts and chambered exhaust. If I use extrapolation to try to figure out how many Pace Cars had either of these options, it's single digits. It seems, however, that a disproportionate number of Pace Cars had shoulder harnesses, and chambered is not uncommon on Canadian Pacers (maybe GM was trying to use up the discontinued chambered inventory by sending it to Canada?). Extrapolation is a starting point.

[al8apex]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: CanCOPO</div><div class="ubbcode-body">You can use the typical &quot;Car Show&quot; methodology
ONE of ONE
20000 made
300 had consoles
200 were datona yellow
100 had Wide Oval tires
50 had an L78
25 had a red interior
6 had an underhood light
1 was built on the first Tuesday before the dark of the moon.

By the way, no documentation but I have 82 signed owner statements.

Super Chevy in Houston this year. A guy with a hugger orange COPO clone. As I was looking at the car a bystander asked him if it was a ZL1.<span style="font-size: 14pt"><span style="font-weight: bold"> He said no. It's a </span>ZL2</span> as this was the iron block version. I started discussing the car with him and asked if it had a BE rear end? He said no, it's a 12 bolt. Two weeks ago I saw the car at the Corvette and Chevy show here in Houston being represented as a real COPO. </div></div>

ZL2 is the RPO for the cowl induction hood

so ALL (it seems) 69 Camaros are ZL2's <<GRAEMLIN_URL>>/smile.gif

[Unreal]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 1969z280</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Unreal</div><div class="ubbcode-body">The problem with using that method, is that it is easy to option out to &quot;one of none.&quot;
</div></div>

One of none? </div></div>

Yep, take any highly optioned car, especially one with an uncommon option, like fold down, and an uncommon color, and start multiplying out the percentages. You will end up with one of less than .5, or essentially &quot;one of none&quot;.

[442w30]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 1969z280</div><div class="ubbcode-body">Extrapolation is as close as you're going to get to the number. It's not the actual accounting but it will be a reasonable estimate. Example: if half of a production run (50%) came with a certain option and only (10%) came with another option, it is reasonable to assume only 5% came with both options. </div></div>

This would be statistically incorrect, as the 50% would have been taken from the total production, as would the 10%. Hence, taking the 50% sample and then applying the 10% figure that was initially derived from the population (total production) would give you an F in statistics class.

By the way, I received an F too at some point, but this I know to be true.

[CanCOPO]

Great site. Awesome story on the JFK (?) ambulance. One thing IS statistically correct. If anyone is going to find and sell a 1 of 1 car it will be BJ. They have an endless supply...