the OD gives a 0.7 reduction, so with a 3.90 rear [standard] the 'final' would be 2.73 - the OD equipped trucks originally came with a 4.11 rear, which would give a 2.87 final ratio
"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
