Jetaholic
12-14-2007, 11:38 AM
So I was playing with my engine config in Desktop Dyno...
I was kinda messing with the cam timing to change the duration and widen the LSA...ended up removing all overlap...
The results were 537 peak horsepower at 6000 RPM, and 540 ft lbs peak torque at 4500 RPM...0 overlap @ .050 and a 113 LSA.
If you could achieve these kind of numbers with a cam with no overlap, what exactly is the purpose of the overlap in a cam? What are the differences between a narrow and wide LSA performancewise?
I was kinda messing with the cam timing to change the duration and widen the LSA...ended up removing all overlap...
The results were 537 peak horsepower at 6000 RPM, and 540 ft lbs peak torque at 4500 RPM...0 overlap @ .050 and a 113 LSA.
If you could achieve these kind of numbers with a cam with no overlap, what exactly is the purpose of the overlap in a cam? What are the differences between a narrow and wide LSA performancewise?