If the LQ9 is an iron block, you'll be adding somewhere around 160lbs to the car's front. You'll want to factor that into your suspension config, eg. springs and swaybar.
When I went the other direction from an iron block to an LS1, my nose ended up nearly a full inch higher.
__________________
1982 Z28 w/ '01 LS1 + T56, TR224 cam, Katech oil pump, JWIS chain
|