Question on this - I thought the old long stroke engines were designed to be capable of lugging? To prevent the need to downshift so often? Looking at the dimensions though, the Stovebolt is almost equal bore & stroke, so it really isn't a long stroke engine.
No engine is made to be lugged. Lugging is operating the engine at too low of an rpm for the gear it is in. The only way to not lug an engine is to be in the correct gear based on the engine rpm.
A long stoke engine will develop more torque at lower rpms then a short stroke engine. Though a short stroke will rev faster and accelerate faster.
That being said it still does not matter if an engine is an under square engine, meaning the stroke dimension greater then the cylinder bore. For if that engine's rpm is not high enough for the gear it is in you are placing to much strain on the engine.
Lugging is putting to much strain on the engine. Which is different then an engine was designed to have the torque and HP to move heavy loads.
And, even those engines that were designed to move heavy loads can be lugged.
