Lab a Rev 4, I did on almost same setup you guys have an increased 9mph WOT(at 55 now), great accel and no slip as my Mirage's...had many. A great 4 blade and stayed within 4600 rpm. I'll never go back to 3 blades...at least for this boat, the 350 stock..

Interested in your findings. I have a stock 88 240 with a 454 MAG. Currently running a 23p 4 blade. I'm overall happy with the prop but am looking for a little more top end. I tried a 21p laser II and had a lot of slippage at take off and, like you, was getting to high in the rpms to go to wot. I'm wanting to try a 23p 3 blade, but want to test one out before buying.

I tried the prop out this wknd but didnt get to try it out alot because we were at the lake cumberland raft up all day and we had 6 people and 2 coolers on board as well. Another problem is my speedo doesnt work, im gonna get a handheld gps unit and hope it works well. I can tell that it raised my cruise speed at the same rpm and I ran it a little and got it up to 4600 rpm wot with trimming it a little but like I said that was with alot of weight in the boat. So far I am happy with it but I need to get that handheld gps and try it compared to the 19 pitch I have.

I use my android phones free app called Ulysse Speedometer in its cradle, works great.

Yep, lots of GPS apps out there now, I used GPSspeedo - free download, and I like it because it gives you a large digital readout that is easy to read at speed. Verified it against the digital speedo in my Civic, and it is pretty accurate. Not sure how well it would work on a lake if you are not getting good data coverage, however. Has anyone tried?

thats great Id love to use my iphone but lake cumberland has sketchy service and its always edge network. id love to not buy a gps, any info or advice?