Sun Gears in a 727?

727s come with a 4 or 3 pinion aluminum planets , at 500 hp use the 4 pinion, when useing NOS, turbo, trans brake, or very hight HP, then upgraded planets are a must, You will be fine with stock planets.

FYI:


727 3 pin front aluminum planet


727 4 pin front aluminum planet


upgrade 727 5 pin steel front planet


4 pin billet steel front planet with bearings