The sponsers on this site seem to have a pretty good hold on the weak links in the 4L60's. They are experts and have built far more of this transmission than any "local" tranny shop. I have DOZENS of local tranny shops in my area I just dont wanna be visiting them every other month. Good luck

 

I think you need to read more on the current state of performance 4l60E's. My stock trans lasted 60K miles with well over 100 tracks runs and zero problems. That was from stock to bolt ons and to a 11-sec heads/cam setup. I currently have a FLT Level IV for the setup in my sig. It's driven to and from the track without a problem. It's not a fluke or a "freak" but very typical on those running built A4's by reputable shops.
Not trying to flame, just trying to open your eyes to what's out there.

 

The 4L60E is fine and built can stand a good amount of abuse. I think sometimes people dont think deep enough into it the reason that you hear of more 60e trans breaking than any other has nothing to do with wether its weak or not . Its a simple case of there are more 60es on the road than anything else 100000s

 

The current "accepted race build" 4L65e handles over 1,000 hp and 750 ftlbs of torque, and will make a couple hundred WOT NOS-assisted 2-3 upshifts at better than 7200 rpm. Some people can flame all they want, but not my fault if the builder did not do his job or the customer did not want to pay for it. With current parts quality/availibility, premature failure is un-acceptable. I can show u 9sec st cars w/ 4L65s, I can even show u a low 10sec truck at 4600lbs running a 700r4 (same internals as 4L65) w/ no failures.

I guess my point is that 99.9% of the "local" shops do not know what the vendors and heavy-hitters here know about these units. There are at least 40 steps to making these things live, most shops are still on step #4---and why not? On a performance car, u only get a tail light warranty anyhow. Pay a couple grand now, or pay a few hundred a few times, your call

 

I spent a good chunk with Circle D and couldn't be happier. Slightly better than stock rebuild, and it shifts like a dream and definitely is a huge improvement over stocker.

FWIW

 

Talk to Dana at probuilt automatics on here PBA is his name. He sells really good rebuild kits and have a good reputable trans guy where your from assemble it