[MHenricks]

What is the advantage or disadvantage of a single pattern and dual pattern camshaft?

[bullheimer]

dude, i got no friggen idea. but i do gotta subscription to Hot Rod. and the sept 2002 issue "Pick da Poifect Cam" say diss:"if your heads have exhaust to intake flow ratios under 70% (exhaust is 70% less of intake flow) then use a dual pattern cam to crutch the weak exhaust port. Over 80% you're in sngle pattern territory. (blower, turbo and nitrous motor generally prefer dual pattern grinds) Now, all you have to do is know this RATIO!!! Buhahahahahahahahahahaha! Maybe that means you find the area of your exhaust and intake valves and do the math. or is it diameter? square root?

[HotRodS10]

[QUOTE]Originally posted by bullheimer:
[qb]dude, i got no friggen idea.

LOL.....Man, thats my answer to the majority of the questions on this site. Anyway, I love that line dude, cracked me up when I started reading.

HRS10

[ August 08, 2002: Message edited by: HotRodS10 ]</p>

[78 monte]

Split pattern would be better if you have a restricted exhuast system or sucky flowing exhuast ports.Pretty much the way I gather it(this could get scary)If you have pretty equal flow in and out intake,heads,exhuast system use single pattern.If you have small exhuast pipes,cats or restricted mufflers use split profile.