Recent content by RayRay70

  1. R

    Magnum or No?

    Yeah I'm with you guys thinking it's the standard model.
  2. R

    Magnum or No?

    Mercruiser 7.4l 454 4bbl Engine: 0D390851 Transom: 0D370469 Drive: 0D403732 -- 7.4L Bravo 88-91 The boat came with stickers attached to the stabilizer bars proclaiming 360 hp which would indicate magnum but I'd like to know for sure. Thanks for any guidance.
  3. R

    454 Low Vacuum + Flutter?

    Update: I used a zip tie on each end of the vacuum hose going from the vacuum break to the carb and voila. On the bright side I can do anything I need to a quadrajet, now. Thanks for all the help narrowing this down.
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    Boat accident at dusk

    I always carry an extremely loud air horn.
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    454 Low Vacuum + Flutter?

    Hey Bondo, thanks. I guess I don't know for sure what this engine's vacuum is supposed to read at idle, and I'm worried about the flutter in the vacuum gauge indicating an issue that I could exacerbate by continuing to run. I guess I'm hoping for a marine-454-whisperer to either tell me the...
  6. R

    454 Low Vacuum + Flutter?

    Didn't realize that, thanks. Do you think it would be as low as I'm reading out of water?
  7. R

    454 Low Vacuum + Flutter?

    Thanks I'll check timing and post results.
  8. R

    454 Low Vacuum + Flutter?

    Thanks, Ill run those tests and post the results.
  9. R

    454 Low Vacuum + Flutter?

    My Mercruiser 7.4 454 vacuum reading seems low, and the needle flutters *I think* like it has worn valve guides. It has the stock cam + stock pretty much everything else, except electric fuel pump and regulator. Engine serial# 0D390851 . Marine Quadrajet carb. Idles pretty steady at 600 rpm...
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    Which Spanner?

    Hi folks, Can someone tell me which spanner I'll need to buy to remove the caps from and rebuild the trim cylinders on a Bravo One stern drive serial# 0D403732 ? Thank you, Ray
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