"assuming"? ya didn't count the teeth? if the original rear was 3.90, there won't be a lot of difference - even if it was 4.11, without doing a comparison with a tach, you might be fooled by the sound and "feel"
"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
