lobe separation angle

Oh that helped out a lot.


Wider LSAs tend to give a broader and flatter torque curve, with good street manners, a strong vacuum signal and a smoother idle.

A narrower LSA gives more peak torque at the expense of bottom end torque in comparison. Also diminished street manners and a lower vacuum and rougher idle.

All that said, you will likely not see much difference between a 110 and 112 LSA, all other specs being equal or close to it.

Generally speaking, everyday street engines work better with a wide LSA, while hotter street/strip engines work better with a narrow LSA. This is why you see the factory Chrysler cams like the Road Runner cam and the 340 cams were ground on a 115 and 114 LSA respectively.

No one can argue that they did not perform, either.

Thanks. Nice explanation.