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:
![](https://www.coperacingtrans.com/images/3PFAW.JPG)
727 3 pin front aluminum planet
![](https://www.coperacingtrans.com/images/4PFAW.JPG)
727 4 pin front aluminum planet
![](https://www.coperacingtrans.com/images/CRT5PB.JPG)
upgrade 727 5 pin steel front planet
![](https://www.coperacingtrans.com/images/Planets%20002.jpg)
4 pin billet steel front planet with bearings