Hey guys getting ready to do Head,cam package. been talking with Andy at A@A. here's what i got so far AFR 205cc heads,LSX fast intake,With 90mm throttle body 40 pound injecters,under drive pully,LG Long tube headers, The only thing i'm stuck on is the cam looking for a pretty lumpy cam at idle Andy told me to go with comp cams 228/232 looking to get around 450 rwh. what do you guys think......Thanks....

 

You're definitley going to be over 400 rwhp with those mods.

There are tons of different cams to pick from. The LGM GX3 is one of the more popular big power lumpy cams around.

http://www.lgmotorsports.com/catalog...oducts_id=1399

Mark

 

the G5-X3 would be the cam of choice. the G5-X2 is a great cam also and would give you a tiny bit more torque down low at the cost of a few less horsepower on top. Either on a 114LSA should be real nice and drivable. on a 112LSA though they will sound very mean

Shane

 

Thanks guy's I guess i'll call andy tomarrow and talk to him About the g5-x2...

 

How will you be using the car?

 

IT's a good cam. Might want to call LG directly and order. See if you can get it any cheaper by buying directly from them.

Shane

 

How are you going to drive your car??

Drag racing, Street performance, road racing or just bragging rights that "I've got 450 RWHP"???

Big difference for the use. Do you want HIGH end HP or low end TQ to get you OFF the line or out of corners??

I have drive cars with well over 430 rwhp but were dogs off the line and out of corners, where a car with only 355 rwhp but gobs of low end torque anda FLAT torque curve got off the line and out of corners much faster.

Again, What is your intended use for the car??

 

get the G5X3. you will LOVE it.

 

mostly going to be a weekend car. maybe a little street racing

 

Street racing!!!

 

Let rephrase that to a little 'personal enjoyment'

For drag racing and getting OFF the line, you may not want a big cam but one with good low end to get you OFF THE LINE quickly.

I drove a freinds Z qitrh AFR205s and G5X3, I was not impressed off the line or around a low speed corner but over 3500 it was gangbusters.

 

What would be your cam recommendation for a street car? I don't care about top end HP, I want to increase the low and mid where I drive the most.

 

Bigger is not always better.

OK here is the LS6 cam
LS-6 204/218 551/541 117.5

Possibities:
LGs
G2 224/224 580/580 114

G5 224/230 581/572 114

Futral F13 230/232 595/585 114

But I think 112 LSA is a bit much

Dont let other ppl tell you what to get. Spend time reading and looking, just dont go

I am looking for a road racing cam and heads to get me out of corners and up to speed. Dont need a gazillion HP over 6300 rpms, but 1900 to 6500 rpms

TSP-233 233/239 595/603 113 - 1900 to 6500 lots of low end and mid range

Lots of good info on LS1tech.com
http://ls1tech.com/forums/showthread.php?t=422520

Ok here are my notes on cams:
NOTES:

A larger intake lobe will make more power up top
an exhaust bias cam what this means is a MUCH larger profile due to the exhaust lobe being that much larger.

more exhaust will cut low end torque but can help make more top end.....

More exhaust duration on a camshaft will allow the motor to run a smaller intake duration for a given
RPM range which improves the TQ at the lower part of that RPM range and the larger exhaust duration will help keep the power on after HP peak.
The more important thing with intake and exhaust durations is how they relate to each other when you combine the lobe areas, valve diameters &
curtain area, and flow of the heads. Then you can come up with a total E/I ratio and match something up to that.

Be careful with the "off the shelf" LS1 cams. Especially the big ones. The ramp rates on the lobes are brutally fast and will eat your valvetrain alive.
There are only 2 cams designed for the LS1 that were meant for road race use. The ASA cam and the Grand Am Cup cam. You wont see the peak #'s .
With these cams like you do with the others, what you will see is oodles of power "under the curve". Most Ls1 cams are "peaky".
These ones are not. They both have big duration, narrow LSA and decent lift. I dont know about he ASA cam but the GAC has an asymetrical lobe profile. Alot softer on the valve train

http://www.ls1tech.com/forums/showth...23#post3098323

Just remember this was was specifically designed and dyno tested for the CNC ls6 heads.

*This cam would most likely be a bad choice for most ported heads. The reason I say this is that the ls6 cnc heads are designed with a much more restrictive exhaust port than the usual ported ls1/ls6 head being provided by vendors.

*We confirmed this when the cnc heads were flowed at MTI recently. The exhaust on the MTI heads was much better than the CNC head, so in this case this cam would be too big on the exhaust side for a set of MTI heads.

*It might be worth trying. But, your heads need to be about a 70% intake to exhaust percentage. Just remember GM spent ALOT of dyno time getting a cam to work with the CNC heads.

*114-115 LSA. You can still get the duration you are looking for out of that cam, have more engine vacuum, a better idle and a broader band.

*Larger LSA will move power up the RPM band and flatten the curve in general terms.
*Advancing the cam will move the power down the RPM curve. There are many variables so these are just generalities.
*You should also look at the seat duration, 0.050 timing and 0.200 if available.
*Compared to the 114, the 112 will have more idle/drivability issues (especially on an automatic) but will sound meaner and give a little more HP on the top.
*The 114 will give a little more torque down low.

PS. My applogies to anyones thread I may have coppied but not referenced.

 

decided to go with g5-x3 112 Lsa thanks guys.....