When I drive partial throttle it drives fine but under full throttle it shifts 1-2 like it should but 2-3 feels like 2nd to neutral no 3rd gear at all. When I let off the gas it goes back to second gear push the gas lightly and it drives away fine shifts though all gears just like normal. It doesn't feel like 3rd is slipping its more like no gear at all, the motor revs up free like it has zero load on it when this happens. the transmission is stock so is the converter and the trans tune except the shift points are set to 6k.

I know nothing about automatic transmissions so help me out please

 

sucks but its a good excuse for a FLT or performabuilt

 

yeah mine jumps a few hundred RPM's before it shifts to third at 1/2 throttle. i havent been brave enough to see what happens at full throttle.

 

sounds like like you may have burned up the 3-4 clutch pack. I know that's what I did. It originally started when I broke my 3rd gear apply piston(the exact name escapes me). I had the exact same symptoms.

 

well i can't say i didn't expect it

 

cant beat the price of 1600 for a lvl 2 performabuilt

 

i have a 4l80e that i could put in it but i am afraid it will be a dog with my current setup and a 4l80e i do have 4.10 gears though

 

4l80e!!!! im almost done with my 80e... waiting on the computer!

 

https://www.performancetrucks.net/fo...d.php?t=453474

better hurry.

 

I want to know why are you afraid to swap 80e from 60e with your currently? IT seem 60e on 6.0 is faster in 1/4 than 80e right? But if you stick with turbo 80e would be faster than 60e? I not sure about this. To see if anyone can explain this. Thanks.