i'm kinda in the dark here

i know a little, but know where near enough

thanx

 

get a comp or lunati catalog, or visit their web sites. you'll get a lot more than i could tell you

 

well, i could read cam specs all day

but, i want to know what the cam specs mean

i understand the basics of them, but when it gets in to stuff like valve overlap, adv. duration, etc.....i'm lost

 

do what i said

 

here, i took the liberty of finding the site for you. enjoy.
http://www.holley.com/HiOctn/TechSer...IECCTech3.html

:lala:

 

I'm glad to see that you're on the right track as far as wanting to know what cam specs mean cause they are a big part of what makes a motor run how it does. If you start to understand how different specs effect a motor physically and chemically, you'll have new doors open to you if you get as far as building motors. Good luck to ya.

Tom

 

Go to Comp's site, then go to their catalog, there's pages and pages of stuff in there.

 

I just got the latest hot rod magazine (or am I "late", and just reading last months?) and they had an article on "how to choose the best cam". They went into some details- not much. About time they had an interesting article.

 

Lemmie give you a real simple practical rundown.

Advertised duration is about meaningless...ignore it.

Duration @ .050 is the standard by which to compare. It's quite simply how long the valves are open....how "big" it is.

What lift is is obvious, but it's also about meaningless. Ignore it too.

LSA is the seperation in degrees between the centerline on the intake and exaust lobes. It is something to consider, altho much more subtle in effect than duration. Less LSA is less streetable, but can yield more power for the same duration. If choosing a cam for an EFI car, it is critical that the LSA be very high..round 114 say.

 

thats so your engine can still produce enough vacuum, correct?

 

or because the stock chip will lose it?

BTW, I found this article on our site very useful for intake, cams and some other stuff...