im looking to upgrade my cam. i dont want anything too radical, but i do want more pep but not completely kill my gas milage.. any suggestions on about the lift and duration or stage of cam i should go with.?

 

MSA cam stage I: http://www.thezstore.com/page/TZS/PROD/PEM01/10-2001

MSA cam stage II: http://www.thezstore.com/page/TZS/PROD/PEM01/10-2002

MSA cam stage III: http://www.thezstore.com/page/TZS/PROD/PEM01/10-2003

MSA cam stage IV: http://www.thezstore.com/page/TZS/PROD/PEM01/10-2004

MSA cam stage V: http://www.thezstore.com/page/TZS/PROD/PEM01/10-2005

MSA cam stage VI: http://www.thezstore.com/page/TZS/PROD/PEM01/10-2006

Info about stock Z cams:

http://www.geocities.com/bruskiz/ZCamSpecs.htm

If you don't want anything radiacal... go w/ a mild cam.

 

id go with the one or 2 for your wants and needs if you just want a little get uo and go. mine is a bit higher than the 2, more towards the 3, and it isnt too bad, still quite streetable

 

do i have to replace all valvetrain as well?

 

i want 2 port my head an i think the stage III will be wat i will be going with after the port sounds good right

 

Only if you want to keep your warranty & prevent damage to your new cam:

When you use your already worn rocker arms, they can transfer their wear pattern onto your cam... if there are any impropper wear patterns, or defects in your rockers, your new cam will then receive the same pattern.

Also... depending on which cam you choose, you might need stiffer springs.

 

Sorry wha? None of that made sense.

 

i going to port and polish my head, and i want to go with the stage III cam, this cam would go good with a lite port right?

 

Yeah, you deffinately want more air w/ the stage III. You're going to port the intake to match the head right?

 

I had the 274 duration cam (stage 2?) and it was pretty good. It shifted the power band up by about 500 RPM on stock electronics, but Im sure it would have run much better on a properly tuned megasquirt. I threw it in with the old rockers without any problems, but your experience may vary...

 

If you are seriously going to port & polish your head, do not polish the intake side. If the surface is too smooth on the intake, the fuel will not atomize properly, and it will be slower than it was before. What I did with mine was ported the intake side like a bitch, and smoothed out the exhaust side. THen I ported my exhaust manifold to match that. I actualy roughed up the intake side a little. I didn't port the intake, just cleaned it up with sandpaper.