actually it's number of turns of the driveshaft for one turn of a wheel .... you need to have the other wheel blocked

the original ratio would be 3.90, or nearly 4 turns of the shaft for one turn of a wheel - if it had an OD trans it would be a 4.10, just over 4 turns of the shaft

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics