Okay I’ve been scanning the forums and doing searches but I can’t tell much about the different cam set ups and what will be best for me. The only thing I’ve really learned was don’t go with 280 on a stock turbo. I’ve got a Burshur Catback, Injen intake, MBC. What’s the diff between 264/264, 264/272, 272/264, and 272/272. (Hell throw in 280s to make this a complete answer all on cams shafts). Now knowing this difference what ones would you recommend I go with? I mix things up with Road, drag, and Snow drifting. Someone save me

 

seriously, call or email Buscher, AMS, or vishnu. Tell them what your goals are, and they will give you the best answer you could get. I did the same thing you are doing here
and you get good info, but the real answers are telling a major tuner your goals. There are no final answers.

 

To turn this around on you:

What are your power goals?
Do you plan to keep the stock turbo?
What kind of tuning do you evetually plan to use?

These things along with numerous other factors need to be determined by yourself before anyone else can answer your questions.

 

Power goals high lol, keeping the stock turbo will never get the cash to go bigger, Ill get tuned and reflashed accordingly

atleast tell me the diff between 264/264, 264/272, 272/264, and 272/272

 

Bump, anyone tell me?

 

There is nothing wrong with 280's on stock turbo. You will get max whp on them, no doubt about it. You do however need to "degree" them to suit your style.

 

The difference in the numbers is the "duration" of the cams.

This refers to how long of a period of time they will hold the intake or exhaust valves open.

The other number worth looking into the the "lift" of the cams which refers to how far the cams will open the intake or exhaust valves. The majority of cams on the market all have the same lift so you won't need upgraded springs or retainers. Cams with a higher lift will require upgrading those parts.

The longer the duration (higher number), the more top end power, theoretically, while losing some low end power.

 

just to throw this out there...

the ramp up of the cam also has quite a bit to do with whether or not you need to do springs.

take two cams with the same lift but one ramps up and down twice as fast, the steeper ramp
cam would need spring where the first one wouldn't

 

Right, I was just trying to simplify things! Ramps angles gets pretty technical.

 

I thought the basic theory for turbo applications was the higher the lift the betta?

 

I think something alot of people overlook (or aren't aware of) is that EVERY cam design, including OEM, is a compromise.

Different cam options are designed to meet different performance, drivability and efficiency goals and "what's best" usually involves being very honest about how you drive your car most of the time (and your goals) and having a good talk with a tuner who's very knowledgeable about the cam options you are considering. Also remember that adding just cams won't give you the benefit - you generally also need to have some tuning or a new flash (or map) availalbe to take full advantage of the changes.

The only one who can really answer "what's best" for you is you - try to find some fellow Evo owners who have done what you're considering and get their opinions, or better yet a ride in their cars.

 

this is the best advice and what I try to tell everyone for all mod-related questions. A ride in a car and/or an actual user review in person simply can't be beat for seeing and understanding real-world application of all of these great explanations.

 

Ok forget the best set up for me, dont care about the best, whats the diffrence performance wise between 264/264, 264/272, 272/264, and 272/272
why do people mix 2 diffrent durations 264/272?

 

Matched cams will move the peak power up the curve (264 lower, 272 higher, 280 highest).


A longer duration Intake Cam will make more Horse Power at the sacrifice of Torque. It will promote a slightly quicker spool and boost response.

A longer duration Exhaust Cam will make more Torque (about the same as Horse Power). It will promote better exhaust flow at the expense of slightly slower spool and boost response.

 

The reason for the split cam profiles, is to get more torque for the bottom end, and higher hp on the top end. Basically the theory is moving the powerband to where you want it, for your type of driving..