To clarify that, as long as you are accelerating the trans will remain in passing gear. You can flip the toggle back to normal as soon as you hit passing gear. When you let up on the gas the trans slips back into OD.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.