Hi everyone, i know this is going to sound extremely noobish but i want to find out the grind on a cam that is in my 96 z28 lt1. i bought the car recently ago and don't know much about it except it has a cam, full exhaust, tune, stage 3 clutch, intake, and more. but im trying to get a guesstimate of the grind on the cam, i don't know to to figure this out. i got no paperwork and not a lot of info on it. i bought it for 2,000 about a week ago.

here is videos of idle and rev=

http://www.youtube.com/watch?v=BVk0swgfd9Y


http://www.youtube.com/watch?v=CaI6z0QaBOI

http://www.youtube.com/watch?v=hSOV361guwA

 

Yep it's got a cam, a little bit of a lumpy one. Sorry though, going only by sound, there's no way of "knowing" just what grind you have. You'd have just as much chance of guessing what pistons are in my engine by listening to it, if you know what I'm saying.
Hey, maybe someone should invent an iPhone camshaft sound app like they can do with identifying songs!

 

that would solve my problems ha,. but to you does it sound mild or wild?? the only thing i know about the cam is it was purchased from summitracing for 665 bucks.

 

More on the wilder side than mild, but it doesn't sound like an animal (your car would rock and roll if you had a real radical cam). The cam's overlap (the amount of time both the intake and exhaust valves are open at the same time) is what gives you that lumpity lumpity idle. Overlap is the result of the cam's intake and exhaust duration, as well as the LSA (lobe separation angle). By the way, does your car need to get emissions tested? I'm willing to bet that your engine runs a tad porky at idle, and might have a tough time squeaking by. My 69's numbers at idle failed with flying colors back when older cars still got tested.
The other thing you don't know is were the lifters replaced, and were the rocker arms changed to ones with a different ratio?

 

well bad news.. blown headgasket and warped heads. so not to happy, if anyone has lt1 heads for sale im in need.

 

A machine shop can mill down the gasket surface of your heads and make the warp problem go away. That would be cheaper and better than buying used replacement heads that you still wouldn't know if they are any better than yours, until you get them checked out at a machine shop (which you would be a fool not to do).

 

well, if im gonna have to get work done one them id rather go bigger, what are my options as far as different heads go?