What exactly does lobe separation angle mean? If the LSA is 114* what does that mean. Also how is valve overlate measured in, and what is a good number to consider in a performance engine?

 

TTT for this..... I wanna know also, and just incase it is very technical, can someone dumb it down also.

Thanks

Tim

 

LSA is the Lobe Seperation Angle or the number of degrees between the intake and exhaust lobe centerlines.

 

For some reason I thought that lobe seperation angle was the measure in degrees that the lobe centers were seperated...

Example: max lift on intake to max lift on exhaust in degrees = LSA

 

If you have a longer stroke, do you want a larger LSA?

 

Typically, the more cubes you run, the larger the cam.

For example, a 383 will gobble up the smaller cams like the cc 304, Hotcam, etc... You get better results from larger cams like 236/242 and such when dealing with larger cubed motors.

This is just what I have seen from doing a lot of reading.

 

Just do a search on Lobe Separation Angle on google.com. You will find plenty of information!!