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  1. Scott06

    5.7 truck cam vs marine cam

    Agree leave the truck cam will work just fine
  2. Scott06

    228 oil pan/timing cover leak

    Check if oil pan or timing cover has corrosion on it, if severe may need replacement
  3. Scott06

    Questions about Reversion on 454 Engines

    Yes it is a high performance thing have a hot cam in there with lots of overlap it will create reversion. Stock cam timing etc no problem, only an issue with modified engines.
  4. Scott06

    Ran motor (in driveway) without oil in lower unit?

    Those are exhaust shutters that go in the top of the exhaust down pipe justbelow the exhaust elbow. Must have been over heated at one time. Replace it
  5. Scott06

    Old ford 302 no spark

    x 2 on machine shop. Usually something is wrong with valvetrain geometry when this happens. Typical is valve job is done someone may have upgraded to positive seals or higher lift cam and not machined guides down properly, retainer can hit the seal causing bind, valve could be hanging up. I...
  6. Scott06

    No Clue Engine

    I think 125 ish is generally where you consider it worn, gets about 100-110 and you have non functioning cylinders. i had a 3.0 with about 800 hours and still had 145 compression across the board
  7. Scott06

    No Clue Engine

    That looks like it was repowered with a partial engine package. The U bracket that holds the coil, circuit breaker Etc looks very similar to what places like michigan motorz, marine power, etc sell with their partial engine packages. This is a link to one...
  8. Scott06

    Frozen Prop on SX-M Duoprop, Seeking Advice

    I think any grease… woulda been better than what he had
  9. Scott06

    Setting the timing

    Some one added a delco est kit to it , common upgrade that was also used by merc and volvo penta over the years. Chris has steered you right on how to set it make sure you can measure the total advance with an advance timing light or put a timing tape on the balancer
  10. Scott06

    Intake choice

    Get something like this to cover the hole https://www.jegs.com/i/Holley/510/301-20/10002/-1 divorced choke block off plate, not 100% sure the link is the one you need but you get the idea.
  11. Scott06

    4.3 Chevy

    Truck engine 96 and newer with vortec heads matching your existing boat engine. Truck cam is close enough to marine to keep, if car engine swap in marine cam. Strip it to long block swap over marine oil pan, put in new marine head gaskets , and put in brass or stainless core plugs. Swap over...
  12. Scott06

    U-joint bellows ring

    110 lb ft is in the factory manual
  13. Scott06

    U-joint bellows ring

    No adhesive on that end right?
  14. Scott06

    Mercruiser 3.0 Fuel Issues

    Post a picture, but i think That would only affect it if the accelerator pump was hung up and not letting throttle return .
  15. Scott06

    U-joint bellows ring

    I hear using merc power tune or similar carb cleaner as a lubricant and it pushes in by hand… i dont think glue goes on that end . @Bondo can you confirm ?
  16. Scott06

    Compression ratio 5.7l

    its all the combination if parts cam, heads, intake, carb working together and correct for the application. Typical marine application is more akin to a truck, rv, trailer pulling application where torque is king. A boat is under constant load like these applications. typical street performance...
  17. Scott06

    Compression ratio 5.7l

    Im just saying you want basically a stock replacement head vs soemthing with port design made for automotive performance applications which tend to focus on higher rpm than a marine low rpm torque application. i would talk with what ever vendor you chose first about the application .
  18. Scott06

    Compression ratio 5.7l

    Probably this head https://www.summitracing.com/parts/sum-151124 not sure if the runners are modified or stock shape and volume. Reading the text would be concerned if they are made for marine rpm or typical hot rod rpm with gearing …
  19. Scott06

    Compression ratio 5.7l

    If they are 96 and up vortec heads yes you can pick up 35 or so hp, but will need a vortec intake as well. What do you mean by 3/8 exhaust valves ? As you mention exhaust valves are 1.50” …
  20. Scott06

    Mercruiser 3.0 Fuel Issues

    Set the choke a tad leaner https://www.carburetor-blog.com/knowledge-base/mercarb-choke/
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