Upgradeing my lowers from stock bravo1 to either imco or sportsmaster, for horse power upgrade, and need a nose cone with my application. what do you guys prefer.

Also 2 b1 lowers for sale 1 just completly rebuilt 10 hours ago and the other was done 50 hours ago. (offers)

I believe that IMCO lowers have proven to be faster than Sportsmaster lowers. I think that Max Machine is probably the fastest, but they are extremely expensive.

My opinion,
Chris

yes I agree mm is the fastest and merc the slowest you loose like 4 or 5 mph over a stock merc case, unless your over 90 which the merc can start to blow out [stock case ] I had good results with my imco 2'' shortie over a stock merc with nosecone picked up 5mph with imco.

So your saying that the imco will be 4-5 mph faster than stock b1 lower. i will be over 90 thats why i think nose cone will help. Thanks

I just bought Teague XR Plantinum shaft drive as my B1 was dying behind a 610 HP 540. It came with a -2 Sportmaster lower. So are you guys telling me I will likely go 4 to 5 MPH slower? I was running 84 -85 on GPS with a labbed 27 Mirage Plus. I think I am going to be sick.

The skeg on the Sportmaster is longer (mainly for high X on step bottom boats?) than the IMCO one and that slows you down bad. I don't know if anyone has trimmed the skeg to standard length and improved the speed though.

check the old sportmaster posts

http://www.offshoreonly.com/forums/g...ortmaster.html

JohnB, thanks for the link. What ever happened when you filled the two outside slots? My x is deep, so I was hoping to pick up some speed with the -2 Sportmaster. Guess I should have done some research rather than just assuming -2 would be faster.

Didn't go with the Sportmasters because I had heard the Imcos were faster. My -2 Imcos turned out to be a good decision. I had also heard not so favorable things about nose cones.

While they are slower than a similar height drive. If your X is really deep it will be faster.
Steve