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formula 242 ls prop help

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formula 242 ls prop help

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Old 07-15-2019, 10:14 PM
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Default formula 242 ls prop help

I have a 242 with a single 400hp small block. right now im running a 14x21 3 blade stainless prop and i can only get 48mph out of it. I am at 5300rpm fully trimmed out and i would like to get the rpms around 4600. I like how it planes real quick but the top end seems pretty low. I was expecting around 55mph or better while still maintaining the quick planing speed. i was thinking about going to a 4 blade 23 pitch. do you think that would get me where i wanna be and still come up on plane quickly?

Last edited by Snarejdv01; 07-15-2019 at 10:22 PM.
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Old 07-15-2019, 10:46 PM
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What man/model prop do you have now ? You have a 1.5 gear ratio drive ? 350 or 383 SBC ?
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Old 07-16-2019, 06:15 AM
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I cant remember what brand it is. It's the prop.that was on there when I bought the boat. It's a 350. 398hp and 418ft lbs of torque and yes it's a 1.5 ratio alpha
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Old 07-18-2019, 07:33 PM
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I would try a Merc Mirage plus 21p.
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Old 07-19-2019, 07:26 AM
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I have a 21p Mirage Plus for sale if you or anyone else needs one. 300 plus the ride. Or I can deliver for free anywhere from Tamp to North Miami.

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