My friend has a 01' Lightning that he is repowering with 900 HP 540 CI motors. Will he have to go with 5 or 6 blade props? He has been running 4 blade props with the previous 500EFI's with prochargers. Any suggestions from previous experiences would definitely help!

Leon repowered a 35 at lake Tekoma[where I bought my 35 at] and it has 850's running xr's with 6 blade props, it runs over 110 mph, see www.dallasboats4sale.com click fountain tab on lt side. what drives are you using on the 01?

checkout www.fountaindealer.com they also have a 35 that Leon did the motors in. Check used boat section.

The boat has XR's on it. He is going to buy a spare drive to keep with him. If it is to bad on breaking drives then he was thinking of the B-MAX HT's. So that one with 750's is running 110+ they say, think we should be around 120 with the 900's? I think we are going to try and run 5 blade Hydros or those new props from Throttle-up.

Its not my money buy shouldn't 900hp be attached to #6s?

I agree

Its my boat ........Unfortunately, I'm pretty damn broke from these motors at this point. I would love to have #6's but dont ever see affording them. I am definitely thinking about the BMAX HT's but they may have to wait until next winter. I guess I will find out how long they will last soon enough. I will be very careful with the acceleration and when coming out of the water.

Let us know what the boats tops out at. Do you have any pics ?

Just run some bigger 4 blades but don't over prop it...Your drives should make it through a season.
Oh Yeah, Don't hold the sticks forward for too long of a time per speed run.

I will post some pics of the engines and boat tonight. I was thinking of sticking with 4 blade props because I figured they wouldnt load the drive as much. But then I heard that with this much HP & TQ that it would blow out the props unless I went with 5 or 6 blade. They made 876 FT LBS of torque.