2012 Yukon XL - 6.2L Engine Rebuild/Swap & Addressing AFM/DOD

[rdezs]

"Serious power" by definition will very with each person and what they want. Would I refer to in that respect when talking about a Tahoe for example, would be enough power where it becomes necessary to strengthen the rest of the driveline, in particular the transmission.... If that's ignored, you start a chain reaction of replacing transmissions, transfer cases, u-joints, etc. There's a lot of people that simply focus on engine power and ignore the rest.... Sometimes rather successfully because they don't drive it like they stole it. Nothing wrong with building 600 horsepower and leave everything else stock if your point is to have a more efficient engine and you drive like Grandma for fuel mileage. Lol, but that's usually not the case. 600 horsepower with the transmission built a little bit, is very doable and can be reliable. And actually using the power at times, makes getting on the freeway quite fun. There's absolutely no issue with the LS engine making much more power.... The limit usually is the platform it's installed in, and specifics related to the drivetrain. The beauty of the LS engine reflects the versatility of the old small block Chevy but with much more potential. So many aftermarket parts, there's no question you can build it any way you want to suit your needs. While just over 400 horsepower is factory stock in a 6.2, there was a time not too long ago where that would have been considered serious power... So I'm sure the definition will continue to increase that number over the next 10 years and beyond.