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    Driver's side Cylinders 50-60 PSI, Drinkers side 130-140 5.7L 350 1986 K10 Suburban Crate Engine

    HAHAHA that's hilarious!! I love this test, I will try to get my friend to bring the air compressor that I gave him over to my house. I sold my house and gave all my tools to friends, so I could borrow them when needed. I may be able to convince him to load it up and bring it over, it's a big...
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    Driver's side Cylinders 50-60 PSI, Drinkers side 130-140 5.7L 350 1986 K10 Suburban Crate Engine

    I will see what I can do to get a compressor or air supply of some kind. Thanks for the advice. If that doesn't pan out, I will probably rip the heads off to see what I find and hope I don't regret not doing the leak down first.
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    Driver's side Cylinders 50-60 PSI, Drinkers side 130-140 5.7L 350 1986 K10 Suburban Crate Engine

    @Ricko1966 If it were a hole in a piston or bad rings, would that cause all 4 cylinders on the one side to have low compression? That's the part that is confusing to me, is how all 4 have low compression. Wouldn't that impact the compression on the bad cylinder and not the rest?
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    Driver's side Cylinders 50-60 PSI, Drinkers side 130-140 5.7L 350 1986 K10 Suburban Crate Engine

    I just want you to give me good news Ricko, stop ruling out the easy fixes. hahaha
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    Driver's side Cylinders 50-60 PSI, Drinkers side 130-140 5.7L 350 1986 K10 Suburban Crate Engine

    Thanks for the suggestion, probably the next best course of action. I have a broken air compressor at work I was thinking of turning into an air tank, so I could do the leak down test at home. That or I was just going to rip into the engine and take the heads off, probably overkill without more...
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    Driver's side Cylinders 50-60 PSI, Drinkers side 130-140 5.7L 350 1986 K10 Suburban Crate Engine

    Hello Everyone, Picked up a 1986 suburban square body goodness from a guy off marketplace. He dropped a 350 crate engine in the truck that he pulled out of another vehicle. The engine supposedly has about 3500 miles on it and has towing cams. Those are the details I received on the engine. I...
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