"nterestingly, in its stock, baseline configuration, the LS2 made exactly 400 hp at 6,000 rpm and 398 lb-ft of torque at 4,400 using the SAE J-1349 factor, right on par with its official GM rating. Converting to STP correction numbers equates to 422 hp and 418 lb-ft. That’s a substantial difference, but the point we want to make is that GM is not underrating its engines, it’s just rating them differently than most magazine readers are used to seeing. In spite of all of the above, the STP correction factor was used to generate all test results quoted in this article."
So by their own admission using that STP rating they got 22 hp for free out the gate??? so their 77HP gain is really around 50ish using the J-1349 factor????
Linear Mode
