LSA Question
The blanket statement that 108 lsa is good for torque is not an accurate statement.
Assuming friction losses have been minimized, air/fuel mixture quality is good and spark timing is optimal, there are two main factors that influence torque: compression ratio and volumetric efficiency. Get more air/fuel trapped in the cylinder and torque will increase.
Good cam specs are all about trapping the most air/fuel mixture in the cylinder in the desired rpm range. The 108 lsa has been shown to work well on an engine with a wedge style combustion chamber and a bore/stroke combination similar to a Chevy 350. A hemi style combustion chamber will want a different lsa. A large stroker motor may also want a different lsa.
It's all about VE.