Cams Sizing Ok For My Setup?

[huddy]

Hi guys

looking into cams at the moment and i've come across some which are IN & EX 280deg with 8.9 lift.

I am running standard RB20 head with standard valve springs.

From what i've found, the life should be fine as long as i dont get over 8000rpm...

is the 280deg too big and life too much??? It's for my cefiro which is for drift, driveability on the street does not bother me at all.

Would i be better off with just a 256, 8.5 Poncam specs?

Thanks in advance.

-Matt

[Simon-S14]

280 is far too extreme, if your going to do that you'd need a lot of head work done to match the cams

you get what im getting, the 254 8.9mm lift cams... would be sweet in a 20

9mm is the max lift u can run with the stock lifter spring arrangement

[r33cruiser]

+1 with 280 duration cams. your power band would be pushed closer to the redline.

this is not ideal on a drift car which loves its lowdown torque.

[huddy]

so why is 280 duration too much?

[GTR1993]

The bigger the duration the further up the rev range the effective power band of the cam is, so in one hand you have a 2.4L with "reasonably" small turbo for response, then u put in drag spec cams that would make 500 rwkw.

[huddy]

ok gotchya

thanks for the reply

Interested to find out how yours go simon have you got a related thread???

Edited January 26, 2008 by huddy