Originally Posted by Sic Liter

Ahh man, here I was finally accepting the fact that the LS3 is a better engine than the LS2 until a GM personnel made the following comment: "I dyno tested LS engines when I worked for GM. Bottom line is you can beat the snot out of an LS2 for 72 hours, and it makes more HP, more TQ, less crankcase pressure and less blowby as the test proceeds. You can literally compare run data from 1 hour into test against data 2 hours into the test and see an improvement. Likewise between hour 72 and hour 71. Conversely, the LS3 would ****** a wristpin out of a piston ~23-25 hours into the same test. LS2 is far superior based on my direct experience testing both."

Man good thing I did not go sell my LS2 and get an LS3.

Originally Posted by buckmeister2

How does he know this person is a GM employee? How does he know this person actually did what he said? And, how many engines of each were tested? Pretty sketchy evidence.

What is not sketchy, however, is the real life driving experience of hundreds, if not thousands, of people on this forum, and others. I have yet to hear of an LS2 OR LS3 engine failure that did not have some root cause related to the operator.

I am sure people have spun bearings, or snapped rods, or other such failures. But if the failure appears to be so low that it is almost unheard of, what does it matter what some guy beating the crap out of engines for 72 hours determined?

Originally Posted by 5knives

​​​​​​You're talking about a "minimal difference" of 49 hours. That's "barely" superior.

Originally Posted by 1rusty1

I rolled up next to a hellcat and a C7 z06 just last week. They looked scared as **** sitting next to me. I didn’t want to make those dudes feel bad so avoided eye contact with both of them. They took off like maniacs while I just took a right, all the while knowing that there was no need for me to flex. I had them beat before I even rolled up next to them.

LS2, don’t even think about it. Put that sucker right next to a busted up old Pinto guess which one wins.

Hell, when I bought my LS3 vette it had 250k miles. I had the chance to buy an equally equipped 06 with under 4k miles for less but no way I’m touching that LS2. Hell the thing barely had enough power to back out of the garage.

You guys that got suckered into the LS2 feel sorry for you. I’m talking an entire car length people. That means something. That’s important. I’ll see you at the next light losers.

Originally Posted by Tinyboy79

Originally Posted by Tinyboy79

Originally Posted by Tinyboy79