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Starting a 383 Upgrade & What saltwater does to a GM 350 Engine

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 1986Blazer, Jun 7, 2002.

  1. 1986Blazer

    1986Blazer 1/2 ton status

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    I just removed the old GM 350 from my boat. This engine is 20 years old and has 4 bolt mains. The exterior is badly corroded and the years of use in the tropics have cause alot of damage but it has ran reliabily for two decades. Here are some pics of the engine and the corrosion. I plan to turn this into a 383 during the next 8 months. I am going to reuse the block ONLY. The heads are shot and alot of other items will be replaced with the correct parts for a 383. Just thought some would like to see how saltwater can work against a great engine.

    <a target="_blank" href=http://www.geocities.com/pennyan82/Engine.html>http://www.geocities.com/pennyan82/Engine.html</a>
     
  2. mudhog

    mudhog THEGAME Staff Member Super Moderator

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    damn that is bad lol
     
  3. UseYourBlinker

    UseYourBlinker 1 ton status

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    WOW /forums/images/icons/shocked.gif
     
  4. 4x4k20

    4x4k20 1/2 ton status

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    i would not use that block that saltwater does affect cast iron the inner walls of the block are brittle you would have problems with tiny leaks i seen a 302 ford out of a boat the other day at the machince shop the bottom sides of 2 of the bores had cracked off because of the corrision that salt water had caused the 350 blocks are cheap i would try to find else where
     
  5. 1986Blazer

    1986Blazer 1/2 ton status

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    Yea.....I have my suspicions that the block may be bad also. IF (a big IF) it is not, I will start the transformation into a 383. I plan to tear it down in the next week or so and check it out really carefully. I also plan to get it magnafluxed for cracks. So, I suspect it may be bad but I hope it is'nt! I'll keep ya posted!
     
  6. Seventy4Blazer

    Seventy4Blazer 3/4 ton status

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    doesnt por 15 make a high temp anti rust deal?
    i think they do, and if it was my boat, that is what i would be doing. try to make that block last another rebuild.
    grant /forums/images/icons/cool.gif
     
  7. m j

    m j 1/2 ton status

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    fresh water cooled or raw?
     
  8. 70~K5

    70~K5 1/2 ton status

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    fresh water cooled or raw?

    Good Question! /forums/images/icons/smile.gif
     

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