looking at buying a 330 sunsport ,, was wondering if twin 330 hp are enough ?? how fast or slow will it go ,, dont want a dog ,, are they big blocks ?? HELP ??

Yeah, the 330s are 454 ci blocks. You should see 65 or so with a 45 cruise .

Don't want to be a wet blanket, but the 330ss weighs almost 10,000 lbs with a 10' + beam. With twin 330's you'll be lucky to see 60....more like high 50's top end.

Whoops, you're right, didn't realize they were that heavy. I figured they would run like a 311 with big blocks. Man that weighs as much as my 402.

I seem to recall that boat would run almost 60mph. No experience, but at one time I was considering one of them. Decided buy a 312 and pay for hotel rooms instead!

I'd go along with the upper 50's figure...it's a lot of boat your pushing. Cruise (3000 rpms) about mid to upper 30's. All depends on what you consider a dog
I like t500hps's idea , although I have spent the night in a marina with electric and cable tv and land based shower facilities.

A buddy of mine's 330 tops out at 60-62 with 496's and Bravo 3 drives. I'd guess 54-55 anytime to 57-58 max with 330's

Boattest.com tested a 330 SS and it went 53.5 MPH

Motors/Conditions:
Time To Plane: 4.9 sec.
0 to 30: 7.0 sec.
Test Power : 2x320-hp Mercruiser MX 6.2 MPI
Transmission: Bravo Three
Ratio: 2.0: 1
Props: 28
Load: 2 persons, 1/3 fuel, no water, min. gear
Climate: 92 deg., 76% humid.; wind: 5-10 knots; seas: minimal chop

I would suspect the extra 10 horses with extra weight and all the gear that gets loaded on a boat like that would bring it down close to 50mph top end......I did that way to long in cruisers but hey, some people buy sailboats so what do I know.