Originally Posted by Mangled03gmc

Same injectors, if you plan to add a cam, boltons and whatever you will need bigger injectors and a set of 8.1's or the marine 8.1's injectors. If you ever plan on going FI I would go with a lq4 since it has lower comp, will be a lil more boost friendly. Either way if you get a pre 05 or whatever, they will take what ever you can put at them for the most part. You can find a 05 up for 1200 or less if you look. I picked mine up for 1200 shipped to me with 11k on it..

John

Originally Posted by GMCtrk

Through all of my searching, I NEVER saw an 05 up LQ4 that cheap. The going rate for an 05 up is $1700 minimum nowadays. LQ9's command $2000 minimum.

The absolute best prices I found were from a guy on LS1tech: form>function. He had an 06 LQ9 with 35k for $1700 picked up. He is in detroit so it was too far for me. He also has fresh 06/07 LS2's for $2400 shipped.

Originally Posted by JHZ28

how can u tell if its a lq4 or a lq9? are the numbers on the block some where

Originally Posted by GMCtrk

02 is good. If you get a LQ4 just remember it won't hook up directly to a 60e.

Originally Posted by Z28RPM

U can use any of the LQ4 or LQ9 engines

Originally Posted by Truckshop

yes it will. leave out the spacer and use the 5.3 flywheel. as long as it has aluminum heads.