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  1. Scott Danforth

    Volvo AQ231A block Casting Number

    Any 350 block (and there are about 100 different casting numbers) can be made into a 377 or 383 Get a roller block (some From 1988 on, all from 1996 on) Your drive uses a drive plate, so any vintage of block will work - 1 piece RMS or 2 piece RMS. You are limited to a 153 tooth flywheel with...
  2. Scott Danforth

    Need help identifying weird oil plug

    5/16" bolt and some permatex #1. call it done
  3. Scott Danforth

    5.0GL - No Power at Coil

    check the MOB switch. the MOB switch is after the key switch, however before the 10-pin connector
  4. Scott Danforth

    3.0l replacement head

    you need a head from a 1990 or earlier 3.0, about $500 from your local GM dealer that sells industrial engines then you need the correct GM 181 cubic inch valve train parts from the same engine. guarantee they are not ford push rods. you should not have to machine anything if you have the...
  5. Scott Danforth

    '84 Lund 3.0L IO engine runs, locks up, runs, locks up

    No, a mercruiser engine and drive was originally bolted into your boat. that is the only other drive hole that the cobra could fit. By the looks of it, the prior owner found an earlier motor and bolted it to a later drive and installed in the boat. OMC drives for 1984 and 1985 were stringer...
  6. Scott Danforth

    Broken skeg, water re-appearing in bilge

    being a 1995 four winns, I would suspect a soft transom and the transom shield moved when you hit something
  7. Scott Danforth

    AQ271c overheating

    only other thing it could be is the PS cooler is plugged and you are not getting water flow. back flush from the raw water pump would cure that.
  8. Scott Danforth

    '84 Lund 3.0L IO engine runs, locks up, runs, locks up

    to put an OMG Cobra in a 1984 boat meant that the boat originally had a mercruiser in it
  9. Scott Danforth

    AQ271c overheating

    the cooling system is simple. if that fitting is good, the only other place it can suck air is the o-ring at the bottom of the H-frame. to replace that o-ring, the drive should come off so you can split the case however if you tried to run from a tote under the drive (as you posted in post...
  10. Scott Danforth

    What I/O Drive options were used in a 19' Islander

    the inline 6 weighs about 150# more than the V6. that is 4 cases of beer and 2 bags of ice
  11. Scott Danforth

    3.0l replacement head

    mercruiser bought the head from GM. they didnt make the head for the 3.0 however please help us help you there are 3 head designs. the really early 1974 and older. the 1975 to 1990 and the 1991 and later. you need to keep the 1990 and older head with the 1990 and older block you need to...
  12. Scott Danforth

    Gas Issues

    nothing wrong with removing the water from the tank done it many times however you are correct with #2
  13. Scott Danforth

    Gas Issues

    phase separation - water and alcohol separating from the petroleum
  14. Scott Danforth

    Air Don't Freeze Winterization

    I can stagger on beer
  15. Scott Danforth

    Gas Issues

    how old is your fuel? Stabil only works for adding a few extra months
  16. Scott Danforth

    Second Happiest Day . . .

    these guys are just down the road from me in clearwater http://www.continentaltrailers.com/aluminum-ca.htm these are not too far away in Tampa https://loadmastertrailer.com/ there are about 20 or so boat trailer manufacturers here in FL
  17. Scott Danforth

    Second Happiest Day . . .

    from what I saw in my buddies shop..... GMPP rotating assembly, Mercury block and heads
  18. Scott Danforth

    '84 Lund 3.0L IO engine runs, locks up, runs, locks up

    blue is old OMC colors (pre 1980) suggest you post pictures of your drive and engine because you have a frankenboat
  19. Scott Danforth

    AQ271c overheating

    check the pot-metal fitting on the top of the H-frame pivot. the one where the cooling water hose connects to even in fresh water that fitting only lasts about 3 years
  20. Scott Danforth

    '84 Lund 3.0L IO engine runs, locks up, runs, locks up

    if its a 1984 lund with a 3.0 volvo, it would have an AQ270 drive on it the OMC Cobra came out in late 1985, so if the boat is a 1984 it would not have a cobra could be a franken boat
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