Supra SL400 at 4,000 feet elevation

[MontanaDave]

Hey all, I am looking at a used 2019 Supra SL 400. The boat is currently at sea level but I will be bringing it to Montana and our lake is 4,000 feet.
Any concerns about lack of power with the 400 motor for surfing loaded ballast and boat full of people at this elevation?
Any suggestions on high altitude prop?
Thanks for your help

[sloane]

I have the same question, also in MT.

[Larry Arizona]

I have the same question, also in MT.

In 2019, Supra started with a 1.5 ratio transmission but switched to a 1.76 ratio.

If it has a 1.76 I would say no problem if you prop it correctly.

I would say a 1.5 even propped correctly would surf fine, but might struggle with heavy ballast wakeboarding.


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[MJHKnox]

Yep, the 19s were a mid year switch. So ask what the boat has.

A 450 with the good prop would work great out there.

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