tonytone4143

I am helping out a buddy put togehter a lq9 motor, currently doesnt have any heads or intake on the block.So I wanted to know if it would be worth putting ls3 top end on it?? This will be a boost motor, or would it be better finding some 317 heads back on it and stock intake? Thanks in advance. Cam will more than likely be little john cam package

Elledge12

There has been a few threads about this lately. This is the most recent with a link a few posts down to another thread with a ton of great info. Searching is your friend.

https://ls1tech.com/forums/forced-in...s-vs-l92s.html

NuckenFuts

I went LS3 heads and under NA i think it hurt me as wasn't really impressed. People I talked to said airflow velocity was to low on a 370CI as it had a power band that kicked in over 4,000 RMP. Im in a truck vs car so maybe my issue of moving this fat ***.

Now same set up under boost Lq4/ls3/l92 intake I think helping me due to ls3 heads flow more.
video of 60% throttle 14psi
https://www.youtube.com/watch?v=cq_F...ature=youtu.be