Someone taught me to tell the gear ratio of a manual trans you could put it in gear, mark the input shaft and turn the output shaft 10 turns. Then the input shaft will turn the nuber of times of the first gear ratio. If it has a 10 spline input shaft it's even easier as the splines count the decimals (ie 3.35 would turn 3 whole turns and 3 1/2 splines).
If you are wondering if it is a WC or a NWC, look at the front countershaft bearing cup (below the input shaft and behind the belhousing) if it's a NWC it will be smooth. If it is a WC and unmolested it will have a shallow relief machined into it across most of the visible face with a small raised ring with Timken and a part number embossed into the ring.
