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    5.0 to 5.7 with RPM issues after change over

    I recently had my busted 5.0 block on my 1999 FourWinns 238 Vista switched to a new 5.7 replacement block. All other systems on the boat were kept from the original. ECM was sent off to be reflashed and now that the boat is back together I cannot get the boat to run past 2500 RPMs. Boat will run...
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