Hello everyone, I would first like to introduce myself. My name is Louie Filippides and i am currently attending the school of automotive machinists. My father is part owner of American Racing Headers so if you guys have any questions at all about any particular system pease feel free to ask.

Being a S.A.M. student i have a LQ9/LS1 project that i am currently working on. I thought it would be a good idea to get some information from multiple people on a cam spec capable of at least 650hp naturaly asperated and able to spin to up to 7600-7800. Any ideas?

 

How many cubic inches? How much compression? What do the heads flow? What valve size? Header size? Intake? Carb or injection? There are more questions that need answered but these came to mind first.

 

4.030 bore
4.000 stroke
408 ci
12:1 compression
fuel injected (fast LSX R 102mm intake)
1 7/8 ARH
370 cfm LS6 heads
wiseco flat top pistion 7cc valve notch
steel 6.125" carillo rods
jesel valve train

The motor itself is not complete but these are the components I will be using. I just haven't come to a conclusion on which cam and crank to purchace.

 

If you want to spin 7500 rpm ditch the fast and pickup a super victor intake. The fast will peak around 6500 rpm. You're going to need something big; 250/260 11x LSA .700" lift, probably solid roller.