I think the torque management is the Achilles heel of a 5.3. I've seen plenty of dyno vids with near stock to heavily modded 5.3's and the numbers are there, even down low where the LS allegedly has no torque. The TM from GM is just brutal though. Factor in the transmission tune...just brutal. At 36 months I'm buying a tuner for my 2017.
If I were doing another LS swap, I would consider full aftermarket like the Dominator from Holley (Sorry Brett, I can see you cringing from here lol)
If I were doing another LS swap, I would consider full aftermarket like the Dominator from Holley (Sorry Brett, I can see you cringing from here lol)



