Dwell at TDC?

When going to a longer connecting rod, piston dwell at TDC increases which increases torque as I've read. I'm not sure why but that's not my questiom right now. Question is what are the practical consequences of increased dwell. Will this make the motor more or less prone to detonation which might have an impact on compression ratio choice and/or spark advance?

In this case the motor is an old 392 hemi which MAYBE I'll offset stroke(therefore the longer rods). I posed this at a hemi board but didn't get a sure fire answer so maybe with a bigger membership here someone might know at least in theory. The motor will eventually sit in a 66 Dart.

Many thanks
Author: admin