Hi There, I Am Looking At Procharging My 272 Baja 502 Mpi/efi 415 Hp, And Was Wondering If Anyone Can Help Me On What Pitch, Diameter And How Many Blade Prop I Should Run With A Charger,( Rev Limiter Is 5100rpm), I Am Now Running Stock With A 23 Pitch Mirage 3 Blade Prop At 4900 Rpm.. Thanks

You may be able to jump 2-4 pitch sizes. (25 or 27 3-blade) However, I would recommend trying a 22 or 24 pitch, 4 blade Bravo-1.
I also have a labbed, 27 pitch 3 blade Patriot that we ran on a 29' magic w/ a blown 509. With a 1.5 drive it ran 102 MPH @ 6100 RPM. (Its a left hand rotation) let me know if you want to give it a try. (It's for sell if it works out)

Thanks, Curtis

WhaT SC and how much boost????

Probably a 26 Bravo 1 or something close will be your right prop.

Sc Stands For Self Contained And 5 Pounds Of Boost

Tweaked Mirsge Plus for speed!

A Bravo 1 adjusted as needed for the best allaround propeller.

If you need a base line prop, let us know.

my 272 ran mid 70's with a stock 4 blade 26 pitch merc w/procharged 502,with more boost it ran high 70's with a tweaked 28 pitch merc 4 blade. If you put a blower on it plan on starting out with a 26 pitch 4 blade. Don't waste your time even trying 3 blades (with the blower),I tried 25's,27's and 29's,boat would barely plane and would blow the prop loose at will at just about any speed. I been running a 272 with different blower motors since 2001,tried it all,Smitty

The 3 blade may have issues planing. However, once on plane, it will give the biggest WOT #'s.

was wondering what diameters i,m looking at, like for example i've seen 14 1/4, 15 1/2, 14 3/4, and so on and i know that this makes a huge difference, thanks Ron..

was wondering if a 15 1/4 diameter 26 pitch 4 blade bravo 1will be a good prop with a M3SC system on my 502 mpi 272 baja? and roughly what i would rev? thanks

It depends on the increase in HP and the rev limiter setting. Also, tweaking the propeller will help the boats over all attitude.