I'm getting ready to pick a camshaft for a 5.0 project that is going to be megasquirted. Stumbled across a concept that confuses me a bit.
Most of the cam manufacturers are stating that cams with wide lobe separation angles reduce dynamic compression, reduce cranking compression, and increase intake manifold vacuum.
http://www.compcams.com/technical/faq/lsaproperties.asp
Seems obvious that picking a cam that increases idle vacuum will make it easier to tune with a speed density system. But megasquirts give you the option to shut off closed loop control below a select RPM, as well as run Alpha-N control at idle. I would think it could handle tight lobe cams, and the only real consideration becomes vacuum for power brakes.
Can someone explain what is happening with lobe separation angles, and the associated tradeoffs?
Most of the cam manufacturers are stating that cams with wide lobe separation angles reduce dynamic compression, reduce cranking compression, and increase intake manifold vacuum.
http://www.compcams.com/technical/faq/lsaproperties.asp
Seems obvious that picking a cam that increases idle vacuum will make it easier to tune with a speed density system. But megasquirts give you the option to shut off closed loop control below a select RPM, as well as run Alpha-N control at idle. I would think it could handle tight lobe cams, and the only real consideration becomes vacuum for power brakes.
Can someone explain what is happening with lobe separation angles, and the associated tradeoffs?