Not sure about A.I.R., but 400-4spd used a 5 blade w/clutch. 19" dia., 2-5/16 pitch.
Next time i'm home(work'n 2 jobs), will check old Pontiac parts catalog for A.I.R.
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If you cant drive from gas pump to gas pump across the map, its not a street car.
http://s207.photobucket.com/albums/b...hop/?start=100
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