ATTN: Cam owners

[twilightprotege]

^ nice!

 

[akhilleus]

Holy s***....that is crazy... well i guess i will make sure to put that header on... So i guess i got the right goal... exhaust cam + header will make my car very happy
Thanks alot iluvmacs... i really appreciate the help

 

[thewrench]

Yikes!!!!! Is this WHP, if so that'd be great. I'd like to see a back-up in real life before I get too awfully excited, but man, that looks awesome.

 

[FunkyBuddha]

Well..I will be getting my Ractive header pretty soon. After that, I'll go dyno and post my charts.

 

[iluvmacs]

All numbers I give are theoretical flywheel numbers. It would be perfect to back them up with measured values, but I offer this as a guide.

 

[thewrench]

Ok, that makes more sense, still looks encouraging, though.

 

[iluvmacs]

Max power is created by optimizing all airflow devices (exhaust, intake, head, valves, cams) for the same flow. Broad powerbands are created by optimizing each airflow device for different flow. The exhaust is commonly the most restricted (optimized for lowest flow/RPM) because that also makes the car quiet.

Heads, intakes, and cams I'm not completely sure about, but usually if you modify the exhaust first, you'll make the most gains.

I've found that the exhaust is by far the easiest, and cheapest part of a car to improve. I don't mean slapping a straight-through muffler with a 5" tip to an otherwise stock exhaust for that "fart" sound. Getting a header-back exhaust custom bent by a muffler shop can be really cheap. Crush bends and ugly mild-steel piping can be ugly and less than ideal, but it's really cheap compared to head work, intake porting, and other big gain mods.

 

[akhilleus]

this is absolutly true. exhaust work is necessary for any mods to perform fully. But then like any system the true power will only be as much as the most restrictive part can handle.