I have a 1998 272 Bajaboss. I pulled out the 454 mag and installing a 502 mag. Does any run this combo and know what prop runs the best ?

Your boat probably left the factory with a 1.5 drive ratio and a 21" Mirage plus ss prop. If you have not changed anything else, I would guess you should be able to spin a 23" Mirage. The Mirage series are 3 blade ss props. These will get you the best top speed and good all around handling. If your less concerned with top speed and want a more efficient cruise, then you could try a 22" Bravo one 4 blade.

hey, call jack at pier propeller he has a labbed 23 pitch he got from me, you know whos the man i think i bought it 200 dollars

I have the same boat 272 boss had a 502 415hp .Rebuilt to a merc raceing 500hp specs. 150 xr drive. run a 4 blade 26" lab'd Bravo does around 74. ran a 26" with the 502 with efi did around 62. good luck

hey call me , i gave jack a box of props 23 , 24 ,25. rember your wife likes me hashahahah

I was running a 23 with the 454. So you are saying to stay with that prop.

23 mirage plus turned up just a touch,,,,, dont bother trying anything else,,,,, I did all the BS for you years ago !!!!!

I have a 454mag, in my 252. and ran a bravo 4 blade 22P, and now have a mirage 23P. runs 64 at 4900rpms I am going to have brett work the Mirage to see if i can get another 2-4 mph.

Looks like you have some good feedback from everyone to work with.

I would start with the 23 and see where you are at. Trim it up for top speed (and if need be pull back on the stick until your just slightly under the revlimiter). This will give you a base RPM, speed and throttle position to lab from. You might be able to add some cup to your 23 to make it perfect for you. What rpm and speed were you getting with the 454 23" combination?

I found that the 25" Mirage is a turd prop in its standard state. It won't hold in a hard corner. Slips bad while coming over the hump on plane. Just does not have as good a grip on the water as the 23". I can't imagine you'll need that much prop though.

The 275 which is the same hull as the 272 was leaving the factory with a 23" mirage for both the 375 hp mag (61-63) and the 425 hp HO (65-67). The mag was rated for 4400 to 4800 wot and the HO was rated for 4600-5000. The extra speed with the same prop came from the additional RPM. Your going from 385 to 415 so I would expect the same scenario for you. Hope this helps.

can i know the phone number of this people?? because i have a baja 27.5 whit a 496 ho spinning a 23 lr mirage plus, i was using a 23 bravo one(was 24) and i dont like at all the felling of the boat and i was loosing some speed, so i m looking for a lab finish 23 mirage.