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  • 3 Post By DennyW
  • 2 Post By techinspector1

Thread: 350 small low compression?
          
   
   

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  1. #1
    350small is offline CHR Junior sMember Visit my Photo Gallery
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    350 small low compression?

     



    I bought a 89 chevy c1500 with a 350 smallblock. First American muscle car owned. The second day I drove it, it was idoling terrible and then eventually just shut off. I turned it back on and got it home but I had to give it gas In neutral to keep it on. Popped the hood and oil is misting out of the oil dip stick. It's also misting oil from the fresh air vent tube coming from the head to the tbi and the pcv valve as well. I was 4 quarts low of oil and also I did a compression test and 1 and 3 had I believe it was 60 or 70 psi and all the rest of the cylinders where good. Those two cylinders had gas on the spark plugs. The truck dumps oil from somewhere at the bottom I can't find where so I must of blew a gasket. So rite now I'm not sure if I should rebuild it, take it to a shop, or just buy a crate engine. I'm not looking for performance because I'm in the process of building a 283 the 350 is just my get around motor. I'm not necessarily new to engines but I'm still learning and now learning about small blocks so all help is appreciated thank you.

  2. #2
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
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    The 283 will never match the performance of a 350.

    It's hard to beat the cost of a 350 crate motor. Unless you can score some super cheap swap meet parts and minimize machine shop cost, it will cost more to rebuild.

    The labor fees will really eat you up. If you don't have the tools and equipment, they can be rented.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  3. #3
    techinspector1's Avatar
    techinspector1 is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by firebird77clone View Post
    The 283 will never match the performance of a 350.

    It's hard to beat the cost of a 350 crate motor. Unless you can score some super cheap swap meet parts and minimize machine shop cost, it will cost more to rebuild.

    The labor fees will really eat you up. If you don't have the tools and equipment, they can be rented.
    I agree, 350 crate motor.
    .
    PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.

  4. #4
    jerry clayton's Avatar
    jerry clayton is offline CHR Member Visit my Photo Gallery
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    I can't believe the swing toward "CRATE MOTORS"------oh, but they do have free shipping???????????

  5. #5
    techinspector1's Avatar
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    I have resisted the move towards crate motors as well Jerry, but in a case like this, it just makes sense. The 350 that is in this fellow's pickup is obviously in dire straits and needs a large infusion of greenbacks to bring it back to health. It would probably be less expensive as well as much easier to just transplant a ready to go unit into the engine bay and be done with it.
    .
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  6. #6
    DennyW is offline CHR Member Visit my Photo Gallery
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    When I had my shop, I used to on occasion buy things through ATK. I had an account with them back then, and I got a very good deal on engines. This was for the customers that needed something quick, and it also saved them money because I would not mark it up like most shops would. I depended on the book labor time to cover my end, and half the normal mark up on the part.
    ATK High Performance GM 350 Vortec 350HP Stage 1 Crate Engine HP32

    But, I always liked to do the build myself. It's those little things that sometimes gets overlooked...



  7. #7
    techinspector1's Avatar
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    As I have stated on here many times, I personally will not buy a running motor. I want individual parts that I can plan a build around and do it like I want it, not like somebody else wanted it. But for someone other than folks like Denny and me and a few others on this board, who don't have the expertise to build a motor properly, it makes sense to invest in a crate motor. The learning curve for beginning with a bare block is just too long and tedious.
    .
    Last edited by techinspector1; 09-12-2017 at 09:44 AM.
    NTFDAY and DennyW like this.
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