Just found this thread. Is Mike going to buy new props? I really don't think there is much room for improvement. Only bad thing about the current props is that they will blow out when coming on plane if you rev it over 3500.

The boats has no mods (yet )other than holley flame arrestors. Current props are 25" Mirages. Boat will hit 4600 rpm under good conditions.

All 29's blow out coming on plane with 3 blades if you are on it to hard, but thats good for the drive, it keeps dummies from taking off fool throttle

If he has standard Mirages maybe the Mirage Plus will solve the blow out problem. It helped my old boat greatly.

Ron

Hmmm, not sure if they are Mirages or Mirage Plus. Dad might know.

I only get 4600 rpm w/my 25's on the 454 mags, how can 7.4's turn the same or close to it rpms?

Skygod,

Don't know why you aren't turning more rpms. This boat seem to run better than most other 29s with 7.4s that I've read about on the board. We saw 68 - 69 on the GPS more than once.

My boat was delivered with the 25p Mirages plus props. It would only turn 4100-4200 rpm( I have the 7.4mpi's) And reach 65mph.
I then switched over to 24p Bravo 1's, and now turn 4500 rpm.
With a top end of 63-64mph. With the Bravo ones I am able to plane in a jiffy(needed on Lake Erie W/low water levels,IMHO), and some of the top end chine walk disappeared. Overall I am pretty happy. I can drive the boat at 48-50mph all day long without burning tons of fuel.

I have a 1999 29' with 7.4' mpi's. I'm bumping the rev limiters @ 4700rpm running 23 mirage pluses at 65-67 mph, all is stock except for k&n's.

Just added EMI's (new design) and am going to send in the ECU's for remapping and rev limiter mod. I should be able to handle 25's, but I don't want to buy new props's. Most likely I will rework the 23's to 24.5's and add some cup, this should get me to b/t 4700-4900 which is max that I want to spin these motors. Anyone have any other experiences that they want to share that might shed some light on my setup?

all this information is good stuff. Now I am not sure what I want to do?
Pitch my labbed Bravo 1's, 24's to 25 or run my 23 mirage 23's to 24 and add cup. I guess I better decide be for I do anything.
Thanks for the info.

BVS

Erie Desire,

I'm very suprised to hear that your boat chine walked at 65. Ours was rock solid when running upper 60s.