The 1955 1/2 is a made up name by some folks. Then it turns into 1955.5. Then it turns into that is what they were called.
As you can see, Chevy called them Task Force Second Series or 2nd Series or 2nd. The 1955.2 is OK and excepted but it leads towards a decimal unequivalent meaning to second series. I use the 1955.2 because it's easier to type.
It's kind of fashioned after computer versions like 2.0.
Tim and Mike have the correct nomenclature and the GM documentation.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
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