Sun Gears in a 727?

[MoparMark67]

I'm looking to rebuild my 727 and I was told to look into upgrading the sun gears. I have been looking for rebuild kits and I can't find any that carry upgraded metals (Hard parts) for the 727. Any help on this subject would be appreciated.

Thanks guys,
Mark

 

[John at CRT]

There is no reason to upgrade the 727 sun gear. There is no aftermarket sun gear, unless you go with stright cut gear set.

 

[moper]

The sun gear is darn near indestructible. Are you thinking the planetaries that run on it tho? Those come in 3,4, and 5 pinion that get stronger the more gears they have.

 

[MoparMark67]

Yea the planetary gears. Sorry. Novice here. Should I upgrade those? Do you know off hand how many are in the 727? I was only planning to ever go 500 hp max. If that even. Looking more at 400hp.

Thanks,
Mark

 

[John at CRT]

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

 

[MoparMark67]

Thanks John! I'm going to go ahead and pick this rebuild kit up then, http://www.summitracing.com/parts/TCI-128800/
and just run with stock planets.

Thanks again,
Mark

 

[djwhog]

You should contact John at CRT, his kits are more complete and have better parts, the summit kits are lacking!