I have a 358 Diablo with twin Merc 575's......I am just curios if anyone else is running these motors in a 358...........and what numbers are you seeing??

We had a 2001 358 with 500efi's that ran 80 in perfect conditions. I know of a 2002 358 that had 575's but don't know who bought it. The dealer here in Jerse had it back then.

Thanks NJ......I am actually running right at 79-80 myself in perfect water..........that is with 5 people on board, 200 gallons of fuel, 2 coolers, a lot of beach gear and props that are a bit dinged up to say the least........over the winter I will be buying new props and next season I will run her with a light load and see if I can get a few more mph out of her......... anyone have any thoughts on what speeds I should be seeing............................................ .......Johnny

I'd imagine 83-85 should be do-able...what rpm are you seeing/what prop are you spinning?

Missed seeing you this season Johnny. Sounds like that beautiful boat is running great!

Pretty sure they are 30's and I am seeing 5100 rpm........I will be pulling props in about a week and will see for sure........

Missed seeing you guys too Chris........I thought I would see you at the Glenn Cove Run..........and yes, so far so good with the new boat...........................gotta love these 575's......

If you're spinning 30's @ 5100, you should be into the 80's no-problem. Might have a prop slip/prop condition issue.

I will check the props this weekend.......not 100% sure on their pitch............but I am sure they are pretty banged up...........

Johnny, is it true your boat had a stripper pole in the cabin?