1973 AIR (smog)

[Bob M.]

Hi - can someone tell me if the AIR (smog equipment) was factory installed on a 73 or was it just put on for special delivery areas like California, etc. Thanks - Bob

[Michael W.]

Re: 1973 AIR (smog)

All '73s had AIR as well as EGR irrespective of where the car was delivered.

[Bob M.]

Re: 1973 AIR (smog)

Thanks Mike - Bob - Do you know what year AIR became a factory installed item?

[Michael W.]

Re: 1973 AIR (smog)

I think it first appeared as a California option K19 in '66, but stand to be corrected. As to to later years, there's a complex matrix of which cars got it and didn't- according to engine option, transmission and destination.

I think Joe L has it memorized and recites to to himself if he can't sleep.

[Joe L.]

Re: 1973 AIR (smog)

Thanks Mike - Bob - Do you know what year AIR became a factory installed item?

Bob-----


The first Corvette to have AIR was the 1966 model year for California-delivered cars (K-19 required option). All engines except L-72 had to be K-19 equipped. 1967 was the same except that there were no engine exceptions.

For the 1968 model year, ALL Corvettes were equipped with AIR, no matter where they were delivered, even foreign. This same thing continued for 1969.

For 1970-71 only LT-1 and LS-6 were AIR-equipped, regardless of where delivered.

For 1972 most engines were AIR-equipped with the exception of base engine with federal emissions certification (i.e. "49 state" cars).

For 1973 ALL engines were AIR-equipped.

For 1974 all engines were AIR-equipped except L-48 with THM-400 and federal emissions certification.

For 1975 ALL engines were AIR-equipped.

For 1976 and later it varied by engine/emissions application and it's too complicated to go into here.

[Bob M.]

Re: 1973 AIR (smog)

Joe - Tks - question answered - Bob McKain