I have a 1998 Baja Boss 509 m3 procharged 750 hp. I am running a new XR and standard lower. I have a Imco 2" shortie and wanted to know if it would bolt right up or if i need to change anything for it to fit ? I am running a stock Bravo 30 prop.

Yea, its all about the money at this point. I am working on a raised extension box project. Still in the planning stage at this point, I would like to go back 16" or more and up 2" or more.

I have not done one before, but it should bolt up.

Yes it will bolt up. Make sure to put shorter bolts in the anode plate.

2" shortie
 

Oh, I forgot to mention that the Imco shortie came off of a Fountain that is a Left Hand Rotation. And its going onto a Baja that has been a Right hand Rotation. Does this make a diffrence ?

No.

Chris

ttt

Jeffwav
Thank you for loading the past post. Sometimes while taking notes I wasn't sure if setback boxes and twins were being were being described. From the information you gathered and what you shared. If I may run this by you. On a twin with boxes I should run a straight edge in front of the drives back to the lower units. And with the cavitation plate parallel with the bottom of the boat. The prop shaft should be 3.5 to 4.5 below the straight edge. Does that sound about right? Thanks again for your time. PS if its not is it ok to call you?

I'm not the expert, but from what I have found yes. It seems like 3.5 to 4.5" is a very conserative depth with boxes. Some of the guys here are running 2" with boxes. I do not have a ext box and my drive is 5" deep, a mirage 3 blade prop still planes off well. I could have easily went higher but the engine would hit have the hatch.

Keep asking questions, but I think the comments on the prop shafts 4.5-5" below the bottom are for a single engine boat. As you have a twin, IMO your best setting will likely be 2-2.5" range. On our boat, we run a B1 prop at 2" below.You can space down, but it is a really expensive to raise the engines twice. Some of the Fountain race boats are set up at 0-3/4" below the bottom...definitely 5-blade range.