['63GENIII]

Originally Posted by MTCK

Yes when I built the motor, the machine shop did some work to the heads. Valve job, rotator eliminators and believe they machined the valve guide down to allow for more lift and different seals (if I’m using the correct terminology).

In other news, the truck is back in the transmission shop. It started walking through the torque converter lockup and making heat while I was hauling gravel to my brother in law’s place last month. Took it back and it needs another rebuild. Grrrrrrrrrr.

Sounds like it's time for a stick Marcus! JK. I seldom hear of the 4L80s having issues. On the other hand you run pretty heavy most of the time right?