Well Darling, you are comparing it to a C5 engine not a C6 Gen IV engine this is your BIG mistake. By the way the Gen IV engine will stay a 5.7 not a 6.0 as you have been saying. :thumbs Jinx honey, are you blonde by chance?
I have to be at the BG plant on April 2nd they will be running some 04 pilot cars and a couple C6 mules for line configuration setup between April 1st and the 11th I'll be seeing the Gen IV in production setup. They are the same motor sans the heads. arty
The XLR uses a re-engineered 4.6L Northstar engine. The new 4.6L Northstar delivers approximately 320 horsepower at 6,000 rpm and 310 lbs.-ft torque at 4,400 rpm. This next generation Northstar engine also includes the addition of electronic throttle control, variable valve timing, and a close-coupled catalytic converter system.