My 38 top gun was 500s with 5s on boxes set even with the bottom. 70mph at 5500rpm 1.48 ratio 17x25 4 blades. Not going to work for me this year so if they'd work for you let me know, also trade up to a bigger pitch 4 or 5 blade if you have something laying around.

man thats like 20% prop slip!! put a 1 inch spacer in those drives and get them to bite a little harder

Pm me what you need to get for those 25's, I have 27 and 29 3 blades no 4's or 5's. These might work as a starting point for you?

your gonna need the adaptors for his props. his are big shaft props

It only turns about 4800 trimmed deep low 60s. Without alot of trim its nose heavy and unresponsive. I know the #s aren't ideal but that's where it really comes to life.

deleted. confused, sorry.

Finally got out for a ride, planing and cruise is perfect, 10% slip at 3200, didn't get to run it hard but I think I'm going to need 7-800 more rpm. I only opened up for a few seconds and didn't trim it up very far, so it may be less. Acceleration was great for a big mild powered tub!

so what wheels did you try ? thanks

17.25 x 25 p, 4 blade Rolla's not sure on the rake.

1993 Cigarette Top Gun.........3A Drives.........1.68 Ratio.......High X Dimension (Act Like 5s).........17.625x31 Lab Work ..........875 Horsepower ..........5600 RPM.

great acceleration with the 1.68