You're absolutely right about the rpm, that's why I specified 0-28mph LOL. I don't suggest turning more than stock rpm without bottom end work, reliable but strong combo that produces what a 7000 will without me or you noticing the difference. If you're racing, maybe a 7000 but everyday do what you need to do and play with every now and then....what I said. Maybe someone close to me with a 7000 would like to run around the lake one time to really see how much more a 7000 has, I'm willing to bet it's not $2,500 worth...

Another good question is....... whether you spend $10,500 on a 7000 series motor,
OR if you have the room, get TWO 35hp motors for $1,000 more.

I had to lower my trim tab to keep it from porpoising, when I did that it lost 1mph. did u put the 4600 coils on? When I put them on mine the best empty speed I got was 31 and bumped 32 a few times.

Put motors on the same boat and test!!

Interesting thread.... Learned something new, heads and a carb will hang with a Big motor!

where's my waders?

somebody slipped some angel dust in Wills bag of fairy dust. gotta agree with the generic port work on their heads. intake runners i believe could also be at fault on the 7000. but seriously Will. a build like u have bumping up against a 4100 - 4300 rpm range. would have a hard time running up against a 7000. loaded - unloaded or other wise.

A 7000 will have more power at sea level then 4300 feet,. Just simple carb tunning to get them dialed in for different altittude.

Is it possible to have a motor that is set up right out perform one with more mods that is not?

Good info. So why dont we see more people with problems with the 7000? From the guy's i have talked with they have had great luck with no major problems? And we are in wi so sea level