Here's an interesting question I have come up with while trying to figure out what cam for a new 406 I'm gonna build.
What effect does the cam profile between .000" lift and .050" lift have on
1. Idle
2. Driveability
3. Stealthram tune-ability.
4. Dynamic Compression ratio.

Thanks in advance,

Bird

 

It will have an effect but it won`t be much.Between .000 and .050 things are kind of in limbo,air doesn`t really start
flowing very well till .050 lift.Thats why they measure them
that way.

 

You're probabily putting more into this than it deserves.

Keep in mind no cams are rated at ".000" lift"

But different cam companies rate their cams at different lift points. like .0042" ( Crane) .006" (Comp) so the two are not directly comparable. except the .050" rating.

A typical Crane hyd cam will have a seemingly longer seat duration than a comparable Comp cam of the same .050" duration.

The truth is the actual running durations of these two cams are about the same.

Just be sure you're comparing apples and apples when doing a comparision. There is much more to the design of a good cam lobe that you're not taking into consideration by just looking at the number of degrees between the advertized seat duration and the .050" duration. A seemingly faster lobe ramp is not nessessarily actualy faster or nessessarily better overall.