[TLS2000]

I'm wondering where you guys read this stuff?? Seems kins of goofy to do a lot of changes to a car that's biting the dust after 07

That's because the car ISN'T biting the dust after 07. I don't care what you friend who works for GM says.

 

[TLS2000]

Nice post Mantagreen97!

I do dispute the torque curve a little bit on the 3900 though. I happen to have my own evidence of it.

Now, you'll notice that the torque peak is just around 3250RPM, but 95% of peak torque is available just above 2500RPM even. I'm sure it's even available sooner, but my Dyno sheet here only shows from 2600+. According to GM when I bought the car, 90% of peak torque is available from 1800RPM all the way to redline.

You'll of course notice that my numbers are lower, as this is WHP, rather than crank HP.

Overall, I'd say that BOTH engines are almost equal in terms of what they put out, with the nod going to the 3.6 (LY7) for having slightly more peak power. The LZ9 does have a smoother torque curve though.

edit: You'll want to look at my second run more than the first. My first run finished too soon due to the 115MPH limit on the car, so 4th gear topped out at like 5100RPM. Second run was done in third.