So my boat is not as fast as I hopped it should be, crituque my build and tell me where I went wrong or maybe I am just wish full thinking. The boat is a 1991 24' Eliminator Deck Boat. My guess is it weights 4000 lbs dry. The other day I had 50 gallons of fuel and 5 people in it with a bravo 1 prop and 1.50 gears and only went 58 mph on GPS at around 4600 rpm or so (Tach has a bad connection right now and gets flaky over 4K, so I don't really know what the final RPM was. Now we boat at 4300 ft elevation and the density air was probably around 6000 ft.
Last winter I pulled off some edelbrock perfomer RPM heads and installed some Merlin Iron heads that have been worked flowed around 370 on the intakes... thinking it would benifit, but with the tach not really working and I did not have prior gps data on it I have no idea if its better or worse. Did definatly loose some bottom end torque.
So anyway here are the motor specs:
523 inch bowtie block,
flat top pistons (4.563 bore 4 in stroke) (could use a lot more compression at this altitude)
merlin iron heads
solid roller cam (.653/.660 lift and 248/254 @0.050),
1.8 Ratio rockers and girdles
Vr Jr intake,
Holley HP-1000 carb (88 jets with PVs blocked off)
Timing at 40 degrees (High Altitude),
IMCO thru hull exhaust.
I would think I could swing a 24 p prop at over 4600 but maybe its just wish full thinking. What do you think? Anything I really blew?