lucki86

Cam Specs are 230-236 Intake and 609-609 Exhaust and LSA is 111 degrees

Can you please tell me what I should expect from a cam like this... Thank you

mistermog

an explosion and lots of carnage... 609 is probably the lift, not the exhaust duration.

did you mean 230/236 .609 .609 and 111 LSA?

lucki86

I just copied and pasted what the shop sent me in my email...

C6z06man

^ that's definitely what it is.

mistermog

I dont know what specs do, but ive been looking at them for the past 2 months so i know those arent right. shop typod them probably

Buddy A

I think stock duration is 218/238. So the cam you are referring to has less duration than stock. Check lift, that must be with 1.7 ratio rockers. With 1.8 ratio the lift would be .644

Buddy A

If the shop didn't make a mistake typing, RUN. Get another shop

C6z06man

How are you going to get 609 degrees out if a circle? That's definitely lift.

lucki86

Probably was a typo. The shop is suppose to call me back with correction.

lucki86

correction... 230/2360.609/.609 111

Sound better? Opinions?

ToppThat

Take the time to find out what YOU want. Then tell them what cam YOU want. Whose car and money is it . That kind of info would have me runnin for my car.

Mookster

Can someone explain what each number mean in greater detail please? What LSA is/does and how all that works if one goes with a bigger/smaller number?

Thx

Buddy A

Still need to see if they are using 1.7 ratio rocker arms to come to 609. LS7 has 1.8 ratio. .644 lift

lucki86

This is a cam they had custom grinded for a customer which backed out so they had it just lying around the shop. They were going to to give me a great deal if I choose to do that cam but I think I am going to go with a bigger costum cam.

C6z06man

LSA is lobe separation angle. Basically the distance in cam degrees between intake max lift and exhaust max lift(on the cam lobe) changes cam events(when valves are opened/closed), makes torque curve flatter or more "up and down" effects idle quality and more without getting too far in depth.

RedZ4me

don't buy a cam that's been 'lying around the shop' regardless of price.

ToppThat

Tighten (Smaller LSA)=lower end torque--more detonation--reduced idle vacuum --narrow power band. Widen( Larger LSA)=opposite effects

jbs02somws6

Stock cam is 211/230 degrees duration at .050" lift and .591" lift on both sides. LSA is 120 all specs combined for -19.5 degrees overlap (or a smooth idle).

Anyway, OP the ls7 seems to prefer a larger split in duration, since the heads flow so well on the intake side. I'll be looking for around a 228/248 duration and .620" lift cam myself in a few years when I do heads/valves.

Michael_D

I do not like the duration split of that cam OP.... As mentioned by jbs, the LS7 needs more exhaust duration than intake. If you look at the specs of GM's aftermarket grinds for the LS7, you'll see a pattern that supports this.

Duration is the length of time in degrees of rotation that the valve will be open. Lift is how far open the valve will get. LSA is angle that is represented between exh and int peak lift and the cam's center.

nyerby

That Cam is very similar to what I am running in my stock 350ci LT1.. I would not run it in my LS7.