ok, to determine ratio the cheap way, i need details

[Fast68Chevy]

ok with open carrier how to determine ratio the cheater way, by jacking a wheel and turning tire, i suppose if was 2,73 ratio then driveshaft turns 2.73 times to one rev of a tire ? or ? jst making sure, i need to find out whats in the 82 T/A, is supposed to be 2.73 from factory, just want to confirm its that or not. may swap the 3.73 rear out of the firebird to under it if needed..
hmm....

thanks

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Randy- Lincoln, IL
randy@ccaonline.com 2177353230
-71 C-10 350/CH465/3.07, assemble it, yeah right, that'll happen in this world,(not)
-84 Z28 Camaro 5.0L 700R4, 3.73, beater, paid way too much for it like an idiot,,
-84 Firebird SE 2.8L T-5, rod knocking, dammit,,
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