Engine - 3.4L (LQ1)

[RobertISaar]

http://www.angelfire.com/ca2/34Performance/dohc.html

a good primer, though some of the theory is a bit flawed...

[GOT2B GM]

I remember reading that writeup almost 10 yrs ago.....

[digitaloutsider]

So that's where the BS about the "300 HP" LQ1 originally came from. I'm still convinced most of that is horse shit and GM originally intended the production LQ1 to be in it's current output range.