medic717

I completely agree. I had the 5.3L with the 6 speed in my 2018 and it always seemed to be searching for gears with a clunk on every downshift. The new 8 speed in my 2019 with the same engine is night and day better! Smooth as butter!

Thanks for the info! I went with it. Just came in today and I installed it about 30 mins later. So far I like it. I had the oiled on the previous truck with no issues at all. I just like the idea of the powercore not requiring oiling.

Is anyone running the volant system with the Donaldson power core filter? If so what is your impression?

Opinions are something everyone has I guess but I am with you on the 89. Black Bear Tuning recommends a minimum of 89 on a stock tune in our trucks with the 5.3. From my understanding they recommend this because while doing tuning they have noticed retarding of the timing and engine knock while on their computers. Their explanation of why this is makes sense to me. Our engine has a 11:1 compression ratio. Higher compression engines need a more controlled burn which means a higher grade of fuel. Agree or disagree for the difference I will stick with 89.

It looks to have plenty of room for flexing as well. I wouldn't push it to a bigger size personally but I have had no issues with rubbing at all under any circumstance.

Yes I do

I'm running that size in the bf goodrich ko2 with that set no rubbing what so ever on stock wheels

Anybody know if this is a member here? Love the sound and was wanting to ask some questions...