[93mustank]

Stilleto Pumps in the club???

[tmoss]

the advertised and then the .050" lift numbers give you an idea of the lobe. Which numers were the first you posted and do you have both? The inlet is pretty much unrestricted which in general means you don't need a lot of duration to make good power. Also the lobe center number would be nice as well as the ICL recommended.

some people just don't know what to ask, foregive them...........

[M L Struck]

@.050 241/250

lobe sep 104

i.c.l 44.5

[93mustank]

Are you dead serious with that cam?

Nice overlap.. Shifting at 9000 ?

Good luck with power brakes.... Vacuum should be great.

With that lift ? That cam is way aggressive( Dwell) .... And probably an sadi core cam....So if you ran the proper spring need the cam will self destruct.

Where do you guys get these cams??? Flee markets?

[JBIGBOOTSY]

I'm just gonna throw this out there, but I am willing to bet someone just recently learned about billett cams????

And everyone knows a racer is only as good as his power brakes....

[93mustank]

Originally Posted by JBIGBOOTSY I'm just gonna throw this out there, but I am willing to bet someone just recently learned about billett cams???? And everyone knows a racer is only as good as his power brakes....

Keep running your turbo f cams sir.... lincoln log motors

[M L Struck]

I think I will go back to that flea market or garage sale that I got that cam from and see if I can get some power for my brakes, and maybe some sadi core.

[93mustank]

Should run 10's

[M L Struck]

This has come full circle,so remember

"If you can't baffle them with brilliance, then bewilder them with bullshit."

[superbean]

Those heads and intake will flow a lot of air.. even with a stock h.o. cam it would prob run like a scalded dog. Why the 104 lsa.. seems rather aggressive.

Again, there are many "cam theories" and everyone is entitled to their own, but the track says it all.

[93mustank]

Cam theories.......... ? There are theories? Hmmmmm

[JBIGBOOTSY]

Even if u test them?

Isn't an important factor in cam selection "compression ratio"? Or does a 200* lsa and 87* @ .050 theory apply to all compression ratio ranges?

[tmoss]

Originally Posted by M L Struck i.c.l 44.5

are you sure about that?

lobe seperation angle (lsa) is the degree distance between the intake and exhaust lobe centers and is generally ~104-116 degrees

installed intake center line (icl) is the angle at which the intake lobe center is installed and is generally in the same range.

my guess is you don't have the cam card.

[88-gt-t-top]

so, can you guys stop will all the sarcasm and bullshit for a little so those of us that want to learn what all this means don't have to weed through the filth pouring from that hole in your face!!!
Thank you...

[ironsteed5.0]

[M L Struck]

sorry my bad intake centerline 104

lobe seperation 108

[88-gt-t-top]

Originally Posted by M L Struck sorry my bad intake centerline 104 lobe seperation 108

The lower the number the rougher the idle right?
Is this, mostly, what decides how the cam will idle?

[M L Struck]

not sure about that, but the lower the number the quicker you get to peak power the wider, like 112 gives a more wide power range

[Burn'nRubber]

I thought the higher the number the more vaccum and the better the idle. Thats the reason my engine builder recommended the xe270 with the 114 lobe separation instead of the 112. Not sure if I would have noticed much difference between the two, but I went with his word because he knows a thing or two about building motors.

[flyin ryan]

How I understand it is like this

1: Intake & Exhaust Duration: This is measured in degrees of how long the valves are open. This number is rated at the camshaft and end result will be the same at the valve.

2: Intake & Exhaust Lift: This is measured in inches and in most cases this number refers to the valve lift and not cam lift. Valve lift is the measurement at the valve side of the rocker arm. This number is a calculation of cam lift with rocker ratio figured into the equation.

3: Intake & Exhaust Clearances: This is the recommended valve lash for these particular cams. The measurement is given in inches and the card explains that measurements should be done with the engine cold.

4: Rocker Ratio: The rocker ratio is the proportional relationship between measured lift at the cam and measured lift at the valve based on a rocker arms fulcrum point.

5: Duration @ .050: This is the U.S. standard of measurement. U.S.-spec cams are measured at .050 thousands of an inch.

6: Lobe Lift: This is the actual lift of the cam without the rocker ratio calculated into the equation. Cam lift is figured by measuring the cam from the tip of its ramp to the bottom of the base circle. Then measuring the base circle and subtracting the base circle measurement from the tip-to-base measurement.

7: Lobe Center: This is also referred to as lobe separation angle. Lobe center is measured in degree comparisons between the intake lobes and the exhaust lobes from the center of the camshaft.