I am considering a tranny hopefully sometime soon through FLP. I am lookin a a 6.0 with a radix, yank 3k, and 4:10's. I am afraid that a 4l80e will take to much power to run. The 4l60e might not be strong enough?? I am leaning towards the 4l65e. What do you all think, pros and cons???

 

With a 6.0 and a Radix setup,I wouldn't consider anything less than a 4L80E.I know that there are a lot claims about how strong 4L65Es are,but I've personally destroyed three low gear 5 pinion planetarys and one 5 pinion high gear planetary.Even under warranty it a royal pain to change transmissions that many times,go with the 4L80E.

 

Okay, so what does it take between cost and extra work/ parts.

 

Speed engineering has the cheapist 4L80E package I've seen.I'm sure it's not nearly as strong as FLPs transmission,the price of their package is cheaper than a FLP 4L60E.