Carb right or wrong ?

[Bob B.]

My 1970 350/350 4 speed is a VERY original car, bought from original owner. I got the car with a carb Rochester 7040507 code EV which is proper for a 350/350 4speed & ECS It was delivered new in Connecticut 3/16 production date
date on carb is 3529 Dec 18 1969 I don't think I have ECS, that was Calif only ? Tech manual says I should have 7040207 DA I wrote to Stan Falenski National Team Leader 70-72 and he says it is OK, installing the wrong carb was not unusual if date matches and car appears it is original carb I will not receive a deduct, BUT I don't have that in writing, just over phone- good guy by the way. Am I safe keeping the carb I have for judging?
I also have one of the telescoping antenna masts the judging guide talks about vin 6,787 THANKS

[Bob B.]

Re: Carb right or orong ?

right or Wrong- clearly I can't type MY BAD Bob

[Terry M.]

Re: Carb right or wrong ?

My 1970 350/350 4 speed is a VERY original car, bought from original owner. I got the car with a carb Rochester 7040507 code EV which is proper for a 350/350 4speed & ECS It was delivered new in Connecticut 3/16 production date
date on carb is 3529 Dec 18 1969 I don't think I have ECS, that was Calif only ? Tech manual says I should have 7040207 DA I wrote to Stan Falenski National Team Leader 70-72 and he says it is OK, installing the wrong carb was not unusual if date matches and car appears it is original carb I will not receive a deduct, BUT I don't have that in writing, just over phone- good guy by the way. Am I safe keeping the carb I have for judging?
I also have one of the telescoping antenna masts the judging guide talks about vin 6,787 THANKS

Depends where you have the car judged and who the judges are == just what you wanted to hear, right?

Obviously, if at a Regional or National where Stan is present you should have no problem. If at a Chapter meet, with a judge that needs to use the TIM&JG to judge your car, the letter of the book will apply. Remember, the book says it is the responsibility of the owner to document any unusual circumstances regarding their car.

[Bob B.]

Re: Carb right or wrong ?

Terry- Thanks for the input, all I can do is show photos of the carb from when I got the car and the letter sent to Stan. I have had pretty sharp judges absolutely swear there were never any telescoping antennas put on 70's and the judging guide confirms there were so...
I sure wouldn't put it on- it is UGLY.
Bob By the way, interior screws such as doors and trim panels where the book calls out chrome screws were they really chrome or cad plated the ones on my car look more like chrome. Stainless might get by, chroming screws sounds like a hassle

[Terry M.]

Re: Carb right or wrong ?

A seasoned judge should accept the carb, if date appropriate. That was my point.

We have been debating that telescoping antenna fore several decades. Remember we judge typical factory production. You are learning the difference between typical and possible. As in: "was it possible?" Just because it was possible does not make it typical.

[Ralph S.]

Re: Carb right or wrong ?

On the subject of Telescoping antennas, In the new car prep department where I worked at a Chevrolet dealer from 1967 - 1972 if the mast was missing from inside the car you went to the parts department to get one and all they always had were the telescoping ones because they were the most popular to keep in stock

[Reba W.]

Re: Carb right or wrong ?

The door screws were chrome.

[Bob B.]

Re: Carb right or wrong ?

Interesting, could be. I saw another 70 at Tucson meet last spring and he had the identical antenna as mine- all the mounting and wiring under the fender all look factory fits right but who knows. THANKS, Bob

[Michael F.]

Re: Carb right or wrong ?

bought a one owner 70 back in the day and it had telo antenna mask, not put on by dealer. I think it was the only on of the 3 70s I owned in the 70s, 2 of the cars delivered, sold new, and bought by me in Little Rock, Arkansas. First 70 I bought was a Dallas Texas can and current 70 sold new in Niles Michigan.

[Mark E.]

Re: Carb right or wrong ?

Going back to the question about Q-Jets...

I have both a 7040205 (49 state) and 7040505 (CA version) for my '70 LS5. The '505 has an additional vacuum port for the charcoal canister system, and its forward bowl vent is sealed. Otherwise they appear identical although I realize their fuel delivery systems may be calibrated differently.

So a '505 can be easily used on a 49 state car by plugging its extra vacuum port.

Given this, is it possible the factory occasionally installed CA carbs on 49 state cars if they had a parts constraint?

[Mike F.]

Re: Carb right or wrong ?

Another possibility for the carb is a Service Replacement. When I bought my 49 State 1970 350/350 it had a 7040507(CA) carb installed, it was dated 3529 as well. What it turned out to be was a 1979 7040507 Service Replacement. IIRC, because the 507 had three vacuum ports (one for the ECS system) and the 207 only had two vacuum ports, the 507 became the Service Replacement because it would fit all models.

[Mark E.]

Re: Carb right or wrong ?

Another possibility for the carb is a Service Replacement. When I bought my 49 State 1970 350/350 it had a 7040507(CA) carb installed, it was dated 3529 as well. What it turned out to be was a 1979 7040507 Service Replacement. IIRC, because the 507 had three vacuum ports (one for the ECS system) and the 207 only had two vacuum ports, the 507 became the Service Replacement because it would fit all models.

Since the CA version of the carb works in more applications, it makes sense as a service replacement.

How did you conclude your carb was a '79 service replacement vs. a '69 original?

[Mike F.]

Re: Carb right or wrong ?

Since the CA version of the carb works in more applications, it makes sense as a service replacement.

How did you conclude your carb was a '79 service replacement vs. a '69 original?

The previous owner went to the Chevy dealer in the early 80's and bought it over the counter.