38 speeds
 

Can anyone tell me real world speeds of a 2005 38 with a/c and gen?

with what engines???

Mine with A/C, no gen, no boxes ran 82 any day and 86 on a good day........with 630hp 540's :)

with 500 EFI with ext box they spin bravo 28, so I 'd say 75 to 78 mph... my guess.

525's

guy here had an 04 382 with 525's , a/c, gen, and mercator as well and ran upper 70's on a good day. He did run a set of labbed props too. a guy form the north east bought the boat last year.

LAriverrat. I am the northeast guy who bought Martin's 382. Were you ever on it? The reason I ask is the best I've seen is 74 on the gps. And that was only once. Have not put the 5 blades on yet,but would think I would lose top end. Just curious as to how fast it has run. Of coarse Martin told me he never came off idle when we were negotiating.:lolhit:
BTW 74 full tank, 2 guys,no gear.71 loaded with fuel,water,coolers,gear,and 6 adults.

I have 500EFI's and I have never seen over 74 MPH. I am running 28" 4 blade Bravos and it turns to 5300 RPM.
I want to try 30" to get better mid range running speeds, I rarely push her to full throttle.

why would a twin 500 efi spinning 28, run 74, and a 47 fountain (triple 525) spinning only 30 (only 2 pitch above) would run 90 gps?

gear ratio are different?

What is the gear ratio on those 500 efi formula?

J.B. sent you a P.M.

I bet the gear ratio is the same. well........the Formula and Fountain have the same running length, and they probably weigh about the same! :party-smiley-004:

plus I'm willing to bet the Fountain is getting a few more rpm's out of it's motors. (does it really run 90?)