Well I am mulling over replacing my H151 with a new unit. Still getting gear howl from the trans and highway vibrations which I am convinced are related. Many people have been saying "trans can't cause vibes" but when you look up the definition of gear whine, I beg to differ.
So that brings me to what to replace it with. I am more inclined to replace with a more updated version of gearbox.
Turns out there are two different versions of 100 series H151s... "bench seat" and "separate seat". These define shifter positions as far as I can tell. Bench seat has the same shifter position as the 80.
So.
33030-6A290 looks like something that would work. However I want to double check everything. Input shaft is the same but output is not. Does anyone know if the output shaft on the 100 H151F box has the same spline count/length? IE are the transfer cases on the non R151 100s capatible with the 80 series?
So that brings me to what to replace it with. I am more inclined to replace with a more updated version of gearbox.
Turns out there are two different versions of 100 series H151s... "bench seat" and "separate seat". These define shifter positions as far as I can tell. Bench seat has the same shifter position as the 80.
So.
33030-6A290 looks like something that would work. However I want to double check everything. Input shaft is the same but output is not. Does anyone know if the output shaft on the 100 H151F box has the same spline count/length? IE are the transfer cases on the non R151 100s capatible with the 80 series?
Last edited: