Got a 88 12 meter with 540's making 980 horse each. Had #3's with 1.68 ratio, 3 blade 28 inch props, went 95mph. Upgraded to #5's with 27 inch 4 blades, 1.50 ratio, and goes no faster. Can't seem to brake this barrier. Wondering if anyone else has.

We can get it going faster for you.

Yup, I'd bet the bank on that. LOL Show em how it's done Reggie.

1.5 drives and 27p, I'd assume you must be spinning the engines 6200-6400rpm at 95mph?

Send it to RF powerboats! They will find the lost mph!

Yes, 6400

I've got a 1989 . I'm putting 540 blower motors in it. I put Konrad's on the back 1.50. Motors will be dino @ 5700 hopefully 850 hp, 5 blade hydro 29 pitch props. I'm thinking I need to blue print the bottom. What speed do you think I'll get ???

It should be fast, a bottom blueprint will definitely help.

OK Thanks, now I got to lay on my back for the winter sand sand fill sand gelcoat and buff.

90

That's Good, I'll just have to run the fast cats in ruff water.