I just turned the input shaft and counted revolutions... 1st was just short of three revoltions, a 2.95 1st gear. Reverse was 2.75 revolutions for one input revolution, again consistent with a Camaro T-5 reverse (2.76). OD was 1 input revolution equalled ~1.6 output revolutions, or, 1.0 divided by 1.6 = .625, a .63 5th gear overdrive. Still have to check to see if the speedometer gear is relocated. Thank you folks!

~ Cosmo
1949 Chevy Half Ton
Rocinante, like Don Quixote, he is awkward, past his prime, and engaged in a task beyond his capacities.
"...my good horse Rocinante, mine eternal and inseparable companion in all my journeys and courses." ...Don Quixote, Cervantes
"If you come to a fork in the road, take it."...Yogi Berra
"Rudeness is the weak man's imitation of strength." ...Eric Hoffer