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  1. J

    Edelbrock carb flat spot

    I've got a '77 OMC 235 HP (Ford 351) with an Edlebrock 1409 carb that is stumbling just off of idle. I've followed the tuning procedures listed in the carb manual and just can't get this stumble cleared up, it happens ~ 900-1,200 RPM and runs fine everywhere else. I've tried every combo of .098...
  2. J

    OMC water leak at Intake gasket?

    I replaced the intake manifold gaskets on my 77 OMC 235hp (Ford 351) this weekend and I noticed anti-freeze leaking up between the manifold & head. The part that has me stumped is the leak is coming up from bewtween the # 2 & 3 cylinders. There isn't a water port there, just an exhaust port for...
  3. J

    OMC (ford 351) Intake gasket

    Can I use a regular Ford 351 truck motor intake manifold gasket on my 77 OMC 235HP motor or is there something special about the gasket that I should use one designed for the OMC?
  4. J

    Shoreline anchoring … how much room?

    I just got back from a 9 day camping trip at Lake Trinity. I own a 20’ Formula Thunderbird with a Cuddy Cabin that has @ 36” of freeboard at the stern. While I was there, I anchored my boat between 2 other boats that were @ 80’ apart which left a nice 40’ space between our boats. I actually took...
  5. J

    OMC stringer flushing

    Re: OMC stringer flushing Jon, you're not crazy ... I have the same drive. There isn't a way to put muffs on it. I use the hose connection at the pivot point.
  6. J

    Is this Carter AFB a marine carb?

    Anyone know if this is a marine carb? The tubes extending over the throttle plates makes me think it is but I'd like to know if I can tell by just that.<br /><br />Thanks<br /><br />
  7. J

    OMC blueish green engine paint source

    I've got a '77 OMC Ford powered 351w that I'd like to repaint. I'm not going to paint everything so I'd like the color to be close. None of the local autoparts stores carries a paint that is close to matching this color. The color is a blueish green. Does anyone know what color this is and where...
  8. J

    Edelbrock or Holley replacement carb?

    I picked up a boat a few months ago that I’ve been working on getting ready for the water and noticed that the carb is pretty rusted. This boat is used in saltwater and the motor is a 351W with a rusted out Holley 4160. I did some investigating and it turns out the carb is a 7yr old...
  9. J

    What type of exhaust bolts to use?

    I'm replacing the exhaust manifolds and risers with some Barr replacments for my OMC 235hp (ford 351) motor. What type of bolts should I use ... grade 5, grade 8?? Also, should I put some grease on the bolts to help prevent rusting and make removal easier next time (boy was it fun this time...
  10. J

    OMC Stringer Intermediate drain location ???

    I've got a 1977 OMC Stringer Intermediate housing that I can't find the oil drain for. I've got the Seloc manual and there isn't a drain plug where the photos show in the manual. I took a couple of pictures and posted them on the web. I'd appreciate it if someone could point out where it is.<br...
  11. J

    OMC stringer shifting problem

    I just picked up a 1977 Thunderbird Formula that has some problems. It's got a ford motor and I was told it's a 351. It's got a 4 bbl. Holly double pumper on it. I read that there should be an identification tag on the valve covers but there isn't. From what I've read, the only 1977 model with a...
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