Whats the HIGHEST Gear Ratio used in a B-Body?

Guys.........I've been checking a car today to discover the gear ratio, and did it exactly like I've done it for 40 years........One spin of the tire to ? turns of the driveshaft..........

My question is as stated........ What's the highest ratio you've ever known in a B-Body from the factory? I always thought it was the 2.76........

Either my brain is fried, or this car has a ratio a LOT higher than that........or is there something this senior mind is forgettin'? It's an open rear........what am I missing?