Rarest of the rare on auction

[Dick W.]

Re: Rarest of the rare on auction

The green conv. that proteam bought at Monterey last year was sold to an Indiana collector. PT paid 440 for it and I'll bet they made a profit so it gives you an idea of current pricing. I think the green car is a better car though. My guess is the 375 for the orange car.

In today's market, that would be a reasonable number, now it the seller willing to feel the pain?

[Kenneth B.]

Re: Rarest of the rare on auction

Ken------


They didn't. The radiator used on the LT-1 was a copper/brass radiator but it was not the same one used for ANY big block. It might generally APPEAR like the radiator used for 1966-68 big blocks, but it's absolutely not the same piece.

Also, the L-88 and ZR-2 did not use a small block radiator. They used an aluminum radiator that was similar to the 63-72 small block aluminum radiator, but it was not the same. The L-88 and ZR-2 radiator was GM #3007436, the same radiator used for most 1965 L-78's. This radiator was primarily a big block radiator (i.e. L-78, L-88, ZR-2). The only small block application it was ever used on was 1970-72 ZR-1.

THANKS JOE
I knew that they wern't the same. I was speaking the use of the seperate overflow tank. 63 and up SB, 65 BB had overflow cans,66 to 69BB & 70 LT'1 had none but 454 & ZR-1 did. What was the reason for the switch. If one way worked better why not use it & just change size of the radiator & # of cores for different engines & applications?
KEN
KEN

[Joe L.]

Re: Rarest of the rare on auction

THANKS JOE
I knew that they wern't the same. I was speaking the use of the seperate overflow tank. 63 and up SB, 65 BB had overflow cans,66 to 69BB & 70 LT'1 had none but 454 & ZR-1 did. What was the reason for the switch. If one way worked better why not use it & just change size of the radiator & # of cores for different engines & applications?
KEN
KEN

Ken-----


The early aluminum radiators used in 63-72 Corvettes (as well as 60-62) had no integral supply tanks. So, an external supply tank had to be used.

In general, copper brass radiators used integral supply tanks and, consequently, no external supply tank was necessary or was used. However, there is an exception to this rule. The exception is the copper brass radiators used for the vast majority of 1969-72 Corvette big blocks. These radiator did have integral supply tanks but they had no filler provisions. Instead, an external supply tank with filler provisions was utilized. Why was this done? I have no idea and have never been able to rationalize it. The only speculation I've been able to come up with is that the external supply tank had become kind of a "Corvette-unique" piece after its use in most C2's (except most 66-67 big blocks). So, maybe for 1969 they figured that all Corvettes needed to have one whether they needed it or not. This sounds dumb but I can't come up with any other reason.

[Kenneth B.]

Re: Rarest of the rare on auction

Ken-----


The early aluminum radiators used in 63-72 Corvettes (as well as 60-62) had no integral supply tanks. So, an external supply tank had to be used.

In general, copper brass radiators used integral supply tanks and, consequently, no external supply tank was necessary or was used. However, there is an exception to this rule. The exception is the copper brass radiators used for the vast majority of 1969-72 Corvette big blocks. These radiator did have integral supply tanks but they had no filler provisions. Instead, an external supply tank with filler provisions was utilized. Why was this done? I have no idea and have never been able to rationalize it. The only speculation I've been able to come up with is that the external supply tank had become kind of a "Corvette-unique" piece after its use in most C2's (except most 66-67 big blocks). So, maybe for 1969 they figured that all Corvettes needed to have one whether they needed it or not. This sounds dumb but I can't come up with any other reason.

AGAIN JOE THANKS
That was my thinking also. Engineers work in mysterious ways. You should some how get all the info. that you have learned over the years down on some sort of mediam. I am afraid that you & guys like you,AL G. & John Z, & others will not be here to pass on all the info to the next generation of Corvette people.
KEN

[Clem Z.]

Re: Rarest of the rare on auction

Ken-----


The early aluminum radiators used in 63-72 Corvettes (as well as 60-62) had no integral supply tanks. So, an external supply tank had to be used.

In general, copper brass radiators used integral supply tanks and, consequently, no external supply tank was necessary or was used. However, there is an exception to this rule. The exception is the copper brass radiators used for the vast majority of 1969-72 Corvette big blocks. These radiator did have integral supply tanks but they had no filler provisions. Instead, an external supply tank with filler provisions was utilized. Why was this done? I have no idea and have never been able to rationalize it. The only speculation I've been able to come up with is that the external supply tank had become kind of a "Corvette-unique" piece after its use in most C2's (except most 66-67 big blocks). So, maybe for 1969 they figured that all Corvettes needed to have one whether they needed it or not. This sounds dumb but I can't come up with any other reason.

the remote expansion tank was used to get the air out of the system. the coolant came from the top of the rad in to the top of the expansion tank air space in the 1/2 filled remote tank and it went back out thru the bottom of the tank. also side mounted rad tanks had to have the coolant level at 3" below the top to allow for expansion with no expansion tank

[Kenneth B.]

Re: Rarest of the rare on auction

the remote expansion tank was used to get the air out of the system. the coolant came from the top of the rad in to the air space in the remote tank and it went back out thru the bottom of the tank. also side mounted rad tanks had to have the coolant level at 3" below the top to allow for expansion with no expansion tank

Thanks Clem
But why did they go from one system to the other. Was there some reason that one system was used on some engines & different on others.
KEN

[Clem Z.]

Re: Rarest of the rare on auction

Thanks Clem
But why did they go from one system to the other. Was there some reason that one system was used on some engines & different on others.
KEN

i guess it would be determined if the testing showed a need for better cooling and if the corvette was to be raced it would be a requirement. remember back in the day SCCA racing required the use of production parts

[Tom M.]

Re: Rarest of the rare on auction

By no means am I endorsing the car but y'all are missing that it is 1 of 2. The other 10 were T top cars.

This particular car was supposedly sold at Bloomington 2 years ago for $500k. It was no saled at Monterey 3 months later at $345k. The only other ZR2 that I am aware of being sold in the last 3 years was a coupe that brought $325k real money. I saw it sold and I know the buyer. There may have been some private treaty sales that I am unaware of.

Dick, 3 Documented ZR2 Convertibles
1 is a factory primer car.
I owned the Steel city gray coupe from Canada

I would like to own this car too !!!

[Tom M.]

Re: Rarest of the rare on auction

The green conv. that proteam bought at Monterey last year was sold to an Indiana collector. PT paid 440 for it and I'll bet they made a profit so it gives you an idea of current pricing. I think the green car is a better car though. My guess is the 375 for the orange car.

Steve, The green convertible ZR2 Is the best in the world @ 450k
I like the Orange convertible @ 350- 375k

[Tom M.]

Re: Rarest of the rare on auction

In today's market, that would be a reasonable number, now it the seller willing to feel the pain?

my ZR2

[Tom M.]

Re: Rarest of the rare on auction

Dick, 3 Documented ZR2 Convertibles
1 is a factory primer car.
I owned the Steel city gray coupe from Canada

I would like to own this car too !!!

[Dan P.]

2nd Rarest of the rare?

That's a beautiful ZR2, Tom. Can you relate some driving impressions you had from the car?

[Tom M.]

Re: 2nd Rarest of the rare?

That's a beautiful ZR2, Tom. Can you relate some driving impressions you had from the car?

Dan, It's was faster then my L88 zero to 60
Both cars have stiff rides, and don't like city traffic

[Dick W.]

Re: 2nd Rarest of the rare?

Dan, It's was faster then my L88 zero to 60
Both cars have stiff rides, and don't like city traffic

And when you pulled it back into 4th gear at about 6,500 rpm's that was when you knew the difference between a L/88 and a LS-6. No substitute for cubic inches. Proteam has/had a '68 L/88, that one time in its life, had a built LS-6 open chamber in it. Was absolutely wicked on the street. Don't ask me how I know, that was about 40 years ago.... Lemme see 1.2 miles from a 100 mph start

[Pat M.]

Re: Rarest of the rare on auction

The ZR2 in the auction has chrome valve covers, yet Tom's are painted. Which is correct?