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#3
02-05-2026, 05:26 PM
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each piece should have a casting number;
A casting number is cast into the part - as opposed to application numbers being roll stamped onto a part of the assembly. I believe all early (pre-1968) carbs had tags instead of stamped application numbers. I am not too sure if the 2bbl carbs had a tag attached to a main body screw or not - but I believe that's how I've seen most. People really in the know will be able to place with in a window of time based on the casting number(s) - as GM assigned them sequentially.
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1970 Formula 400 Carousel Red paint on Black standard interior A no-engine, no-transmission, no-wheel option car. Quite likely one of few '70 Muncie three speed Formula 400's left. 1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing) 2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs) |
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