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As usual, thought provoking topics on CRG - I had to go dig out the Z intake, off the engine and stored since '80, car was bought in '73 - thank goodness I never changed them, They actually have remnants of dichromate where the carb base protected them - all four.Regards,Steve
Essentially all of the 'known original' 69 Holley Carb Studs posted in this thread have shown the dichromate coloring.. doesn't seem to be much doubt about that.