LM300 engine upgrade options??

[Steveyzag]

does anyone know if you can change the 265cc Subaru motor with a different engine? something with more power? if it is possible, where can you get one and would any modifications be needed?

[Buggy]

The Harbor Freight Predator 420cc should work but verify your shaft size and rotation is the same. The Honda 390cc is a great engine but will cost a lot more.

[W B]

On 5/26/2022 at 3:15 PM, Buggy said:

The Harbor Freight Predator 420cc should work but verify your shaft size and rotation is the same. The Honda 390cc is a great engine but will cost a lot more.

might want to check the new Harbor freight 459cc engine.

[Buggy]

Keep in mind that the factory matches the drive clutch and belt to the engine horsepower. Too much horsepower will smoke the belt and maybe the clutch.. your factory setup should be ok with a modest upgrade. I think your drive setup can handle up to a 400cca and would not go more than 420cc unless you plant to  upgrade clutches and belt .