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I'm learning here as well.....back to the carburetor, in looking at the add'l pix with this ad it shows a closeup of the carb and the numbers seem to be correct for a 780 cfm for that year/model/engine/trans. Are we sure about the protecto plate interpretation.....maybe the dealer simply put the wrong cfm wording in the ad?
COPO427 - should the vertical piece in the center of the grill be the same color as the car?
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70 Z's were all 780 cfm secondary vacuum carbs. No double pumpers were used on the 70 Z28's. The list and part #'s are correct for a 4-spd 70 Z28. The ad is incorrect on the 850 DP.
The centre of the grille should be body coloured.
See this pic I took at a Camaro show. It's an original owner, original paint low mi 70 Z28. And before it's asked, the front spoiler wasn't available until 1971.
