[JoeC]

Poking around in the books I see the carbs were different for w/o A.I.R. If you look through the Holley carb listings they show 1967 396 with or without A.I.R. Then in 1968 - 69 they do not specify with or without A.I.R. for the L78, L72 Holley. It looks like there was only one carb listed for the L72 which I believe is for A.I.R. On the 1969 Q-Jet listing the third digit of part number designates a w/o A.I.R. carb. My listing shows 396 325hp and 350hp Qjets had no A.I.R. in 69 but then in 1970 they list CA and non-CA for 49 state emission carbs. (The people in Cali just have to be different). I think the 49 state emission rule started in 69 and was also an option in 69 but my carb listing does not show it. I will post this question on some sites to see what they say. Also a fan belt listing should show a different part number for w/o A.I.R.