Some times less is more, 8 1/4 gives you HP and takes less HP to use it...
8 3/4 :burnout: is stronger :glasses7: If it's not needed, why change :happy1:
This is generaly incorrect. The amount of power difference to turn the larger rear is less than 1 HP. The bennifit of the smaller rear is an ever so slight weight difference and sometime the cost of the ring and pinion/set up parts. That is it.
The draw back is a lower HP/Torque ceiling in power handling terms.
The 8-3/4 can withstand 600 plus HP all day long. It served my buddy well in his all steel 69 Dart into the 9's for years. 500 cube roller camed, Indy headed monster.
I agree. The 8-1/4 can take a good amount of power. But the question is how much power are you putting out. Honestly, I do not know the ceiling of it's limits. But I do know it'll take a Duster w/a 400 into the 11's for a long time.