Re: 1975 Smog Equipped Corvettes
Tom-----
For 1975, there were only TWO engine options available for Corvettes----L-48 and L-82. No others that I'm aware of. There were THREE emissions certifications. The "AS" was used for non-California L-48s. The "AU" was used for L-82s. This may have been limited to just federal L-82s. The "DR" code was used for California L-48s. It may also have been used for California L-82s.
In any event, all 3 of the above codes include AIR as part of the emissions system included with that code.
Tom-----
For 1975, there were only TWO engine options available for Corvettes----L-48 and L-82. No others that I'm aware of. There were THREE emissions certifications. The "AS" was used for non-California L-48s. The "AU" was used for L-82s. This may have been limited to just federal L-82s. The "DR" code was used for California L-48s. It may also have been used for California L-82s.
In any event, all 3 of the above codes include AIR as part of the emissions system included with that code.
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