I am building a 1996 38ft fountain fever with 850hp sc efi motors Bmax drives 1.30 ratio spinning 26 pitch Herings. The hull is a twin step but with the early small steps. My question is what speed do you think I will see, the motors are making power up to 6200rpm and I will be propped to that. I appreciate all the input.

got a 99 38 fever with 5 blade 32 max's xr's 1.50's imco shorties with someware around that power 540's 8.71's! running 103 gps on the revs at 5800. think i will pick up a few more top end with 34's on order now.

Sounds good. I hope going wih 1.30 ratio and the bmax will not affect my top end too much.

95 38 fever with 4 blade 30 pitch bravo props imco drives making a lil more than 600 hp running 87 gps at 5200 rpm.........good luck to u

1998 38 fever t 850s -1 Imcos 103 mph 29p bravos 5800

Tim don't you already have a 1996 Fever with 850hp and B Max drives? Yours is the black one with the red lightning graphics right? If it is shouldnt you already know what that package will bring?

Yes this is my existing boat. I was running 103mph before and thought that was a little slow for what I had. I am currently going through everything. I was just looking for input as to what peoples thoughts or experiences were with similar products and if there were any sugestions to increase the speed.

Bmax's slow boats down.

What do you think the speed loss would be between a Imco or xr 1.50 to a Bmax 1.30?

Tim post some pics of your boat if you can. It is one of my favorite Fevers.