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  1. C

    No Power

    I have a 1987 Sea Sprite with a 4.3 that I put a 1990 s10 block and heads in and I cannot get it to run correctly has all new ignition parts and overhauled carb. low rpms it runs but tach goes to 3or 4 thousand rps going about 2000 and engine just starts running like a car with cat converter...
  2. C

    no top speed

    I have a 1987 4.3 omc , just changed the engine block , and replace fuel pump with an electric pump because no place to put old pump on block because it was from an s-10, boat runs good at low speeds but when you want to go faster tach goes all the way around and engine misses and pops and will...
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