ok i have 540 dart . 1000holley carb dart pro1 heads dart sinlge plane intake msd stainlless headers k/n flame arestor 100 gallons fuel boat ran 76.7mph trim tabs to long to low i cut 6in .took another run 78.8 mph gps . that was at 5400rpm .this weekend i will test some more

Sounds good, I may be doing a little more testing myself. Depends on if my parts come in tomorow.

just got back from testing my boat at 2500rpm doing 30mph at 32oo i am doing 45mph at4100 i am doing 60 5500doing 80 mph did a little ajusting and had 50gallons of fuel .trim tabs working alot better :cheers2:

what tabs do you have, what prop a 27 or 28 p? sounds good 80 at 5500 but I bet if you can use a 1050 carb you may find more I change my 850BG to a nickerson 1050 had a good gain I used the same intake with a 1050 spacer. were your tabs even with the bottom of your hull mine are 380s Kplanes set 1/2 or 3/4 '' from bottom ran fine at wfo if you look at pics there not real touching water at 75 to 85 tabs or k planes are good in rough water well keep us posted not sure whats up with my 24 working on the 28.

airtime i got the carb from nickerson . i have a spacer under the carb. remeber i running 136bravo drive with a 23pitch prop . if i ran 150gears then i run a 28pitch on my trim tabs i bolted the to low for long one icut them down to 18inlong they work fine now . i am happy for now i am going to run my boat and have fun with it for now . you have great info when it s about baja thanks for info

Hey what cam are you running I have pretty much the same setup

THANKS I sure would like to know what happened to the guy from germany who had the 25ol 05 last time he posted he was at 87 or 89 with a merc 600 imco 3'' raised box and a 1'' spacer added to the 2'' shortie = 4'' above stock. good luck with yours if I have a left over 1050 maybe in the fall you could try it if your hitting a wall I saw a different going from my bg 850 to nickerson 1050. I have the spacer plate to you could just pop on the 1050 for a day I know what size jets I used its all writen down some where. not sure whats going to happen to my baja it would be fun to finish the bulkheads set it up to kick azz in p6 racing. but Sabers going together next week big motor is finally going on dyno. good luck

Im running only 69 mph on mine, but I only have a little 502 with a 850 holly and a dart single plane, with no spacer, and stock exhaust, x demetion raised 3 inches..oh and no tabs..gets a little hairy at times..

That sounds normal, it is really hard to make them run fast. Next time you are at the Kaskaskia let me know. I will not be back for a few weeks.

Im a little upset at mine.
Just rebuilt 547 CI n/a 630Hp(dynoed) in my 1989 23'5 Force and I can only hit 72.3mph GPS 5600Rpm 24" slightly labbed 4 blade.
Figured I would get 75mph easily.
Just bought a new carb, Im not expecting that to make much difference.