that boat runs 95 with twin mild big blocks. It would work with these though. Just not as fast.

Formula 292’s have twin small blocks and go pretty good.

I care more about cyl heads and cid than i do cross plane cranks…..in boat rpm ranges especially.

It got big blocks in the resto but the original had small blocks for the speed record.

I was thinking more about the sound of the flat planes, not necessarily top speed capabilities.

I remember seeing pics of a surface drive 26 hustler with small blocks that ran 100+. It was red. May have been for sale.

that is pretty damm cool
Boat was perfect in trim...just getting it
I coukd watch that 100 times

400 hp?

Other than the flat crank doesn't seem like a big deal. Not sure why Mercury is doing it.

These have been out for a while, look at what they put in the wake boats.
https://marineenginedepot.com/62l-di-enpac

https://www.ilmor.com/Marine/Other-Inboard/MV8-74L

https://www.ilmor.com/Marine/Other-Inboard/62L-GDI

Or if you really want some power.

https://marineenginedepot.com/new-62l-di-lt4-airpac-620-hp

https://www.ilmor.com/Marine/Mastercraft-Inboard/SC-62L

Speaking of Direct Injection...does anyone have any examples of direct injection on marine engines? Are the intake valves coking up?

Was thinking with marine engines working harder all the time, they either have less issues...or more than the auto cousins.

volvo did use them i think theres issues but theres not many around here