Author Topic: Got a 69 440: Questions and advice on building.  (Read 910 times)

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Offline rts89w150

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Got a 69 440: Questions and advice on building.
« on: May 26, 2020, 08:23:49 pm »
Got a 69 440 from a 77 R/C that someone swapped in years ago, has everything needed to place in my 89 the questions I have and need some input are: What to look for with this engine to see if indeed its good to go or needs a rebuild?, Also is there anyway to check to see if the valve seats have been changed to hardened without removing the heads?


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    Offline Master Gunner

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    Re: Got a 69 440: Questions and advice on building.
    « Reply #1 on: May 27, 2020, 04:00:36 pm »
    About the only way I can think of to check the general health of a uninstalled engine would be a leak down test.

    The heads are easier, just take the valve covers off and check the casting number. If they're 906, which would be correct for a 69, you would have to put in hardened seats eventually. If they're 346 heads, they have factory hardened seats.

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    Offline rts89w150

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    Re: Got a 69 440: Questions and advice on building.
    « Reply #2 on: May 27, 2020, 07:14:09 pm »
    Heads are 906 and really really clean inside, I have always heard that you have to have hardened seats for this crappy gas we use now. I am going to pull the oil pan off and check some of the mains and check for excessive wear, just trying to save as much money as I can.  Thanks for the response

    Offline subwoofer88

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    Re: Got a 69 440: Questions and advice on building.
    « Reply #3 on: May 27, 2020, 10:28:06 pm »
    Have you looked at the crosshatch in the Cylinders? Pretty good indicator of how long/hard the engine has been run. I have a 68' 361B that was totally busted, but the bearings were all in still great shape (see profile pic). If it turns easily by hand, and the cylinders look good then the bottom end should be just fine.
    Also one thing I always think about is the dog ears for the B and RBs engine mounts. Before he mid 70's I believe the dog ears were not as robust, and are easier to break. Though it is only an issue if you plan on making some serious power.
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    Offline dodge82273

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    Re: Got a 69 440: Questions and advice on building.
    « Reply #4 on: May 28, 2020, 03:13:32 am »
    personally , I would not worry about the valve seats , check them ,  let it go .
     some things happened "back in the day "  when the hardened seats became an  "issue "
         they took lead out of ALL gasoline , meanwhile Amaco ( American ) gasoline's high test was LEAD FREE all along .
       they added hot exhaust to the intake with an egr valve 
      auto makers tried to use green castings with large valves , the valve guides wiped out , taking the seats with           them
      THAT was so bad many engines were repaired under factory warrentee , they failed VERY quickly , folks blamed the gas and valve seats ( wrong)
     they started running engines hotter in general  to lessen the emissions
     I was there in the trade when all this happened .  you will not have egr , your heads are old enough to have made it passed the guide problem , that happened quick or not at all .

     hell chevy had a run of 350 camshafts so bad that it could have started an "oil problem" back then  , but chevy owned up to it .
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    Offline Canadian country boy

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    Re: Got a 69 440: Questions and advice on building.
    « Reply #5 on: May 31, 2020, 01:19:58 am »
    If it's all together, I would do a compression test on it and run it and go from there. If it's apart then look for cylinder wear (excessive shine in one area, cylinder scouring, excessive ridge at the top of the cylinders, etc) and look at the rod and main bearings for wear.
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