Which cam = more power

[89stang10sec]

I am in the process of building up my bottom end (306) and was thinking about swapping out the cam. I have cnc ported e7's with larger valves, edelbrock performer RPM intake(soon to be ported),1.6 RR, 70mm throttle body, bbk headers, 24# inj, and 10.5:1 compression. I currently have a comp cams extreme energy 270hr. Specs[email protected]/224exh; lift 512/512. I was looking into an X-cam Specs[email protected]/224exh ; lift 542/542. Do you guys think this cam would work well( make more power)? What about drivability, I have a 5 speed and 3.73's? I will be using speed pro forged pistons, block deck milled 5 thousandths, heads milled 40 thousandths, do you guys think there will be piston/valve clearance issues? Thanks in advance for any advice- this will be my first high performance bottom end build up.

 

[89tang]

You shouldn't have P/V clearance problems with the comp. cam, the X-303 you might if your going to have stock style pistons put back in the motor. But you can order pistons to handle the lift too.

 

[89stang10sec]

And the cam, do you think it will be worth the $165 in terms of HP increase?

 

[MadMatt5oh]

Not a flame but thats only 165$ dude. Some mods that give almost zilch cost alot more

 

[bgjohnson]

how bout a custom cam, it will give you exactly what your looking for, I think Ed Curtis does this and people have eccellent results from him.