I have 2 speed rear ends on both my '50 COE and my '47 Diamond T. I find them very useful, as I drive my trucks in low mountain country. For example, to go to town I drop from 6250 feet to 5300 feet in about 7 miles. Going to town the rear is in high and coming home in low, whether I have a load or not. Of course, at the altitudes I drive I lose power anyway (my engineer friends tell me I lose about 3% horsepower for every 1000 feet. When you are underpowered to begin with, it really makes a difference).
The only time I need to split shift is with a heavy load uphill (such as July 4th when I picked up Lightholder and 26 of his friends at Whiskey Row at 2 am in the COE and brought them home). Now that was a load of loaded lads and ladies.
Kent
