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  1. 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.
  2. 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...
  3. R

    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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