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  1. V

    help with 7.4L 454

    More questions Could anyone tell me if redoing cylinders at 30 over (whatever that means???) in 7.4L 454 V8 ? 330HP (1994) will increase horsepower and by how much? We have a Bravo drive and I am concerned if the drive can handle increased HP. Also, I need to get a set of exhaust manifolds for...
  2. V

    need recommendations

    Hello, I would appreciate any recommendations from people in here. We have a 1994 7.4 l Mercruiser that we will be taking out of the boat (28 foot Crownline) and rebuilding it. We ran the motor 3 weeks ago (with water supply) and it ran fine, but few days ago when we tried to start it? we found...
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