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I have no idea what my HP is but i know it isnt 400. I have a 05 C6 and i am looking to get to the 450 HP point.
my current mods are
kooks headers
VR intake
Corsa X pipe and exhaust
I am online to get 3:90's from chuck in a week or 2 along with his tune and a 160 thermostat.
so with that said what should my next mod be to get to the 450 HP point?
Just did it, 452rwhp/418rwtq
your mods (Kooks 1-3/4 to hi-flow cats, 3x3 X pipe, 3 " back to FMs) + 228/232-114 custom ground cam, ported FAST w/ spacer, underdrive pulley, 160* stat, tune by Carolina Auto Masters.
My LS2 with your mods and a FAST 90, 215 E T heads, and a stinger intake instead of the one you have, made 461rwhp/435rwtq. My cam was a mild 224/228/581/588/114LSA. Also my cat backs are magnaflows. It's not hard to make 450rwhp with the right parts. Keep in mind what type of driving you do mostly when selecting a cam. Mine was a daily driver to and from work, and many trips. Even with my new forged 427 LS3 it's still my daily driver.