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Thread: Transmission ratio for 454xl engines

  1. #1

    Default Transmission ratio for 454xl engines

    I was wondering if anyone knows what would be the correct tranny ratio for these engines in a 36' Uniflite?

  2. #2
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    What size wheel(s) on the boat? that will have something to do with the reduction.

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  3. #3

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    17x17 3 blade cupped Nibrals

  4. #4
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    I'm thinking a 1:5 to 1. I believe thats what I had in a similiar boat a few years back, powered with a 454 and Borg Warner.

  5. #5

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    Thanks, that's what another boat mechanic said also. Any suggestions on props for the best fuel mileage?

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    Again, it's been a few years but I think the prop I was running was a 16 x 16 with a little cup in it.

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