camaroguy_02

like i put in the title... does the cam have any effect on how mean the exhaust sounds? was listening to the soundclips on ls1sounds.com an about nutted when i heard the hooker setups, but most of them look like they have a cam (just from their description they gave). i had thought about goin with a full hooker setup for exhaust, an just disregard the cam, but i want that sound SO bad.

any help?

purple98haz28

iTrader: (5)

one word lope

Drew's TA

Yeah that mean aggresive sound is likkely from the cam, it will make the idle lope and for the most part a cammed car will sound louder aswell. It will still sound great with just headers and full catback aswell.

mcamp001

iTrader: (1)

yes, if you thought LT's plus catback was loud, a cam will only make it louder. You are building more cylinder pressure and flowing more air = louder

Really woke mine up, but I'm not complaining

camaroguy_02

oh ok.. so i guess that brings me to my next question - i see people talkin about how they change out the cam with the heads, but is that the same thing as headers or am i way off? just figured "heads" was short for headers... but i notice everyone sayin that they go hand-in-hand, so changing both out wuld be most beneficial.

thanks for the replies!

WhiteKnightZ28

iTrader: (5)

Nope, "heads" are cylinder heads, ie what the valves/spark-plugs sit in. People usualy do head/cam because the upgraded heads will be able to flow more air (and fuel) to feed the cam's larger need.

Heres a head:



And heres a header:

WhiteKnightZ28

iTrader: (5)

Another point...

Stock LS1 heads can support a 400+ rwhp car, so you dont have to change them. They are not cheap (at least for a good set), just start by doing a cam and some headers.

LS1>girlfriend

iTrader: (19)

Shallow Bay

iTrader: (3)

Did I miss something?

TheBlurLS1

iTrader: (8)

An LS1 car with a 230+ cam idling at 850rpms sounds like it's going to dig your heart out of your chest with a rather dull spoon then eat it with some fava beans and a nice bottle of Chianti. Fafafafafafaffafafafafaf :/lector:

.....too bad mine idles at 1050...


Stock cam'd cars sound great, but usually only after you nail it. The exhaust tone becomes a little more distinct when you have a lumpy rod rolling around inside.

TexaSS

Like everyone has said it's the cam that is making a lot of the noise, and the higher the intake/exhaust the meaner the lope.

orangeapeel

iTrader: (18)

Not true. It is the more overlap, the harder the lope.

camaroguy_02

so when im lookin at aftermarket cams, wut is it that i really need to pay attention to? i've listened to some cammed ls1's at idle and they sound like they're about to die, yet other cammed beasts sound...sexxxy at idle. i dont understand all the numbers i see when people post up the type of camshaft they use.

jmm98LS1

iTrader: (28)

quick & dirty cam specs explanation:
For example, the Trex cam..........242/248 .608/.612 110 LSA

242 is the amount of intake duration in degrees @ .050" lift
248 is the amount of exhaust duration in degrees @ .050" lift
.608 is the amount of max intake valve lift in inches
.612 is the amoutn of max exhaust valve lift in inches
110 LSA is the lobe separation angle in degrees

If you do some searching in the internal engine section there's a wealth of information on cams. More than you'd want to read.

WILWAXU

iTrader: (6)

Compression has the best effect on exhaust sound

camaroguy_02

wow, that *is* a BUNCH of info lol. buts thats cool - never wulda thought the cam info was in the internal engine forum (just never hit me in the nuts til u said somethin), but now i feel much more comfortable about cams - just not installing them

and if i remember right, the lower number LSA, the lower/meaner the sound, and vice-a-versa, correct? and the intake/exhaust duration numbers - higher numbers = more track racing, while the lower numbers = more for street users?

orangeapeel

iTrader: (18)

It is the valve events that determine the sound of the cam. Overlap is what makes a cam lope. I have a cam on a 115 LSA and it has more lope than some cams on a 112. So it is not determined off of one or 2 things. Read the cam guide in the internal section and you will have a more firm grasp on cams.

eallanboggs

iTrader: (1)

Man, hold onto your wallet. You're ripe for pickin! Why don't you make a few trips to the nearest dragstrip and hang out in the pits for a while. It's a great education. Then you can come back and ask the questions you really want to ask, but havn't figured out what they are yet.

Rebelord

iTrader: (2)

And yes, a cam will make your exhaust louder. It made mine helluva lot louder.

Ski

bowtieforpower

iTrader: (2)

Someone *cough cough* didnt believe me when I told them that......