GM released the numbers on the new 5th generation LT4 and it destroys everything GM has previously made. The engine has been SAE-certified at 650 horsepower (485 kW) at 6,400 rpm and 650 lb-ft of torque (881 Nm) at 3,600 rpm.
457 lb-ft just off idle
500 lb-ft @ 1,500 rpm
625 lb-ft @ 2,800 rpm
592 lb-ft @ 2,500 – 5,400 rpm
That means just slightly over idle, this engine puts down more torque than most cars do at full RPM. The LT4 is the same size as the 6.2L LT1 and will find it’s first home in the 2015 Z06. It shares the same bore and stroke as the LT1 but uses low compression pistons to allow for supercharging. I expect to see a lot of fifth-gen engines being used in projects when GM starts selling crate versions.
Why are you calling it “the new king of V8s” when the GT500’s 5.4L makes more power? Whoops…
The 5.8L does produce more power at 662 horsepower / 631 lb-ft of torque. The article title isn’t purely based on power. The prevalence of GM’s LSx motors in automotive projects that I have come across (engine swaps) compared to Ford engines leads me to believe this motor will continue the trend. There might be a little link bait cooked into the title as well 😉 It’s good to be the king.