What motor? Rated at 55 hp

[AaronM]

I'm looking at getting circa 1980 Lund 18 foot tiller. It's rated for 55 HP. Would there be any problem putting a new 50 4-stroke on it or would it need a 40 considering the higher weights of motors today and more torque? Any help would be appreciated!

[JeffB]

I would say no problem. Your still under the max.

[PerchJerker]

I would say no problem. Your still under the max.

What he said .....

[Larson15]

You should be ok. There will be about a 40-50 lb differeince

[Gordie]

you should be fine my buddys dad just did the same thing on a older star craft pike master took the classic fifty off and swapped it out with a 4/stroke yamaha and has no problems at all

[SkunkedAgain]

Everyone above is correct, although you are the only one who knows what kind of condition the transom is in. If it seems weak, then you should have a smaller motor or replace the transom. The max was for when the boat and its structure are within specified ranges, not after 30 years of possible neglect.

[delcecchi]

Many of the Lunds had transoms that were basically aluminum with a hunk of plywood to attach the motor. So there is nothing to rot or degrade, if so.