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Old 04-10-2011, 08:58 AM
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Originally Posted by pitts1313 View Post
I believe a stock 7.4 330hp should operate at about 4600 rpm. A mirage plus will carry the bow higher than just a mirage.
You are correct. 4200-4600. I don't remember when the rev limiter kicks in. I did not see the engine was posted in post 4. Doh!!
I'd wote for a 21"M+ being the right prop for that boat. Get Bblades to lab it to 22". Then it would fly

Last edited by A.O. Razor; 04-10-2011 at 09:02 AM.
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Old 04-10-2011, 09:49 AM
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You are correct. 4200-4600. I don't remember when the rev limiter kicks in. I did not see the engine was posted in post 4. Doh!!
I'd wote for a 21"M+ being the right prop for that boat. Get Bblades to lab it to 22". Then it would fly
when I bought mine it was set up with 330hp, I ran the mirage 23 at 4600. bret could lab it for you. that s a m plus. your x is deep. gps could be 60 to 62. my best was after 5 motor builds ending with 650hp 509 and mid 80s with a 2''imco shortie. that was over 19 years of changing set ups on the boat. once you add a shortie you need a b1 prop.
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Old 04-10-2011, 11:51 AM
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when I bought mine it was set up with 330hp, I ran the mirage 23 at 4600. bret could lab it for you. that s a m plus. your x is deep. gps could be 60 to 62. my best was after 5 motor builds ending with 650hp 509 and mid 80s with a 2''imco shortie. that was over 19 years of changing set ups on the boat. once you add a shortie you need a b1 prop.
Those are pretty cool numbers.

The reason for me thinking the 21" would work well, is because my experience tells me, the M+ hits lower rpm's than the original Mirage.
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