I tried to do a little searching and couldn't find the answer i want.
I'm looking to put some cams in but, would like to know what the cam timing does as far as the 272 280 number goes. what might be a pro or con to one than the other and why do some people run a different cam on intake side than the exhaust side.

if it helps i'm looking to do alot of tracking rather than drag or freeway fun. also why go with a brian cower 400$ set rather than a cosworth 700$ set..
and if you got time valve springs retainers and valves..... do they need replacing or not running stock boost and when might it be a good idea to change em.

Sorry alot to ask for but i'm trying to learn and not just buy **** and i really do appreciate the input...thanks guys

 

If you searched, you'll find that Cosworth gets very good reviews here. Ppl have said they like them better than the HKS due to a broader powerband. GSC also gets very good reviews. BC, haven't heard of too much, but is a deal for budget builds I think. I dont think springs and retainers are a must for 272's unless you'll be reving much higher than stock redline, or going for 280s.

In the end, its up to your usage. I dont have cams yet, but I daily drive the thing so 264 intake and 272 exhaust is a good combo, so I've read.

 

The advice is different for a Evo IX than an VIII. ONLY pay attention to threads and advice for 2006 Mivec Evolution IX engines.

From what I have seen, almost everyone with that motor runs Cosworth or GSC S1.

 

264 intake and 272 exhaust is best for you. 280's cams are full blown race, you need to do internal with 280 because it too aggresive. on some 272 like Cossie u might need to do internal. I have HKS and Cossie both in my car, both are 272's. i like the HKS more because i feel safe reving the car over 7300 rpm. of course it is reccomand to up grade valve train like Cossie. i have a 9 and currently run on Cossie mivec now but regret to take the HKS out...

 

i need some help I have a stock evo 8 turbo with manifold, turbo back exhaust, ic pipes, intercooler, fuel pump, 272 HKS cam and fidanza cam gears and a tune...how much should i expect to pull hp wise? and how good can you hear the idoling of the 272 hks cams?

 

I am only asking bc i am only pushing 320 and i thought i would be in the 350 to 360 range?

 

for those mode you should be around 315 whp to 325 whp range. and upgrade injectors need bro.. the idol on HKS is much much better then Cossie because lift is lower..

 

so to break the 350 mark your saying to upgrade the turbo

 

read my sig.....idles fine with a good tune....i had some trouble when it is really cold because the lack of vaccum under braking

 

so if i were to go bigger turbo what should i get like a stock evo 9 turbo to break 350 hp?

 

not to be a dick but at this point can you please start a thread on how to get to 350 hp?

The info im getting is great can anyone explain why a 280 IS MORE AGRESSIVE than a 272 and why i'd need to upgrade valvle train. What does a 280 do that a 272 doesnt do...... im guessing 280 is a higher lift so, say i do a 272 intake 280 exhaust jus for kicks. over STOCK im allowing more intake air to be sucked in because its lift is higher than stock and even more flow on the exhaust side because its higher than my intake duration.

again if im on the right track what would help me choose the correct cam duration and why do people use 2 different durations

 

you don't need to upgrade turbo to get 350whp. METH is another way to go. or build inside but that cost too much. drunk all day...

 

anyway just get 272 they good up to 600whp.

 

I suggest 272 minimum

 

I wanted to know how distinct can you hear the looping in the idle of 272 hks ?