Will gn400 motor fit gn250 frame?

[jjono-saurus]

hey guys,
i was recently handed a gn250 which was in pretty rough condition.
wanted to turn it into an old bobber but would like more power and a simple kick start, so i was just wondering if a gn400 motor would fit the gn250 frame?
thanks.

[R6_kid]

I'm sure you could make it fit if you really wanted to.

[hmmmnz]

probably, its a slightly longer stoke engine, so might be a bit taller,
but the engine is only a couple of horseys up on the 250, having a 2 valve head doesnt help
you'd be better off with the dr350 engine

[w arwick]

i just put a dr 370 motor in to a dr 250 ( which has the same engine as a gn 250. only drama taller 370 carb wont go on.
so drilled out some jet holes on the 250 carb and all goood!!!, sort of
W