Howdy,
Found a Craigslist ad selling a pinion and ring gear;
"Brand new. Never installed. Pinion # 10394-62-3 or 3740874GM 10 teeth. Bearing included...Gear: 39 teeth. 3697702-10-30-4-62GM."
Any mathematical folk care to tell me if this is a 3.55 ratio?
Thanks-Jim