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Puling the motor

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  • Todd L.
    Expired
    • August 26, 2008
    • 298

    Puling the motor

    It has been a while since I posted about pulling the BB from my 74, I was waiting for my engine stand to arrive. It was a long slow process with a return involved. I do finally have a fully functioning engine stand capable of supporting the motor safely. My question is; when I separate the block from the bell housing can I use any bolts from the bell housing to mount the motor to the stand head or do I need to purchase separate bolts for this task? If so, what size will I need and will it be obvious where to mount them?

    Thanks

    Todd
  • Joe L.
    Beyond Control Poster
    • February 1, 1988
    • 43211

    #2
    Re: Puling the motor

    Originally posted by Todd Lloyd (49373)
    It has been a while since I posted about pulling the BB from my 74, I was waiting for my engine stand to arrive. It was a long slow process with a return involved. I do finally have a fully functioning engine stand capable of supporting the motor safely. My question is; when I separate the block from the bell housing can I use any bolts from the bell housing to mount the motor to the stand head or do I need to purchase separate bolts for this task? If so, what size will I need and will it be obvious where to mount them?

    Thanks

    Todd
    Todd------

    It depends on the engine stand. For most, you will need longer bolts than the ones that normally mount the bellhousing to the block. That's because the bolts have to go through the mounting "legs" of the engine stand and fully engage the threads on the engine bellhousing flange. These tappings have about 3/4" thread depth.

    So, for example, the engine stand "leg" pictured below has a 2-5/8" length. Adding the 3/4" tapping depth to that, these require a bolt of about 3-3/8" length. Also, I use a brass washer between the mounting leg and the block. I don't know if that's really necessary but it can't hurt anything, either.

    I use grade 8 bolts but grade 5 would probably be ok. What's really important is that these bolts be torqued to about 35 lb ft BEFORE they support the weight of the engine. Make sure the bolts are not too long and that they don't bottom in the block tappings before that torque is reached.
    Attached Files
    In Appreciation of John Hinckley

    Comment

    • Ridge K.
      Extremely Frequent Poster
      • May 31, 2006
      • 1018

      #3
      Re: Puling the motor

      Todd, if I remember correctly, a complete 427 weighs about 665 pounds.

      Probably need a stout bolt....
      Good carburetion is fuelish hot air . . .

      Comment

      • Todd L.
        Expired
        • August 26, 2008
        • 298

        #4
        Re: Pulling the motor

        Do you know the thread size. I would like to have the bolts on hand since I am borrowing the Cherry picker. Can I buy the bolts, and washers needed at Home Depot or Lowes, and do I need lock washers?
        Once the motor is on the stand should I have it wrapped in a motor bag?

        Comment

        • John H.
          Beyond Control Poster
          • December 1, 1997
          • 16513

          #5
          Re: Pulling the motor

          Originally posted by Todd Lloyd (49373)
          Do you know the thread size. I would like to have the bolts on hand since I am borrowing the Cherry picker. Can I buy the bolts, and washers needed at Home Depot or Lowes, and do I need lock washers?
          Once the motor is on the stand should I have it wrapped in a motor bag?
          Todd -

          Those bolts are 3/8"-16 (get Grade 8); also get an equal number of Grade 8 hardened flat washers to go under the bolt heads where they pass through the "legs" on your engine stand. You don't need lock washers.

          Comment

          • Todd L.
            Expired
            • August 26, 2008
            • 298

            #6
            Re: Puling the motor

            Thanks guys, this is my first motor pull / restoration, and want to do things right.

            Todd

            Comment

            • Joe L.
              Beyond Control Poster
              • February 1, 1988
              • 43211

              #7
              Re: Puling the motor

              Originally posted by Ridge Kayser (45955)
              Todd, if I remember correctly, a complete 427 weighs about 665 pounds.

              Probably need a stout bolt....
              Ridge-----


              Most engine stands have four mounting legs. So, using the four legs with four 3/8-16 grade 8 bolts it will easily support a big block PROVIDING that the bolts are torqued to 35 lb/ft, or so, PRIOR to putting weigth on them.

              I've had big blocks on an engine stand for a long while. Of course, the last one I had on there didn't weigh anything like 665 pounds.
              In Appreciation of John Hinckley

              Comment

              • Dennis S.
                Expired
                • April 1, 2004
                • 228

                #8
                Re: Puling the motor

                Todd
                I guess I don't know why you are using an engine stand, unless you are working on the engine and need to rotate it. Did you ever consider an engine dolley? I bought one at Northern Tool for $44 and used it to hold my BB after removal, support it on the way to the rebuilder, to the engine dyno and back to the shop. Then we modified the rear attachment points of the dolley so that the bell housing and tranny could be bolted up. Brought it back to my garage as a complete assembly, making for an easy re-installation in the car.
                Attached Files

                Comment

                • Todd L.
                  Expired
                  • August 26, 2008
                  • 298

                  #9
                  Re: Puling the motor

                  Once the motor is taken down and rebuilt, I will put it on a dolly, as it awaits to be placed back in the car. I did buy the engine stand for working on the motor and being able to rotate it as necessary.

                  Comment

                  • John H.
                    Beyond Control Poster
                    • December 1, 1997
                    • 16513

                    #10
                    Re: Puling the motor

                    Todd -

                    Here's what we build the Viper V-10 on in production; kinda pricey for home use, but nice .

                    Comment

                    • Jack P.
                      Expired
                      • March 19, 2009
                      • 1135

                      #11
                      Re: Puling the motor

                      Originally posted by Todd Lloyd (49373)
                      It has been a while since I posted about pulling the BB from my 74, I was waiting for my engine stand to arrive. It was a long slow process with a return involved. I do finally have a fully functioning engine stand capable of supporting the motor safely. My question is; when I separate the block from the bell housing can I use any bolts from the bell housing to mount the motor to the stand head or do I need to purchase separate bolts for this task? If so, what size will I need and will it be obvious where to mount them?

                      Thanks

                      Todd
                      Hi Todd, just a thought, the clutch and flywheel will still be attached to the block, you may have to remove those items before you try to put the engine on the stand. If they are still attached, the block will stand off from the engine stand and bend the bolts, ask me how I know.

                      Jack

                      Comment

                      • Todd L.
                        Expired
                        • August 26, 2008
                        • 298

                        #12
                        Re: Puling the motor

                        Jack, tell me you didn't! I guess if you had a stand like the one John showed us it would not matter.

                        I am going to Naples, FL this week , when I get home I will be borrowing my neighbors cherry picker and getting busy the following weekend. I will post pictures.

                        Todd

                        Comment

                        • Jack P.
                          Expired
                          • March 19, 2009
                          • 1135

                          #13
                          Re: Puling the motor

                          Originally posted by Todd Lloyd (49373)
                          Jack, tell me you didn't! I guess if you had a stand like the one John showed us it would not matter.

                          I am going to Naples, FL this week , when I get home I will be borrowing my neighbors cherry picker and getting busy the following weekend. I will post pictures.

                          Todd

                          I only paid $2,100 for mine in 1970. I guess in today's dollars that would be about ?

                          Jack
                          Attached Files

                          Comment

                          • Ridge K.
                            Extremely Frequent Poster
                            • May 31, 2006
                            • 1018

                            #14
                            Re: Puling the motor

                            Originally posted by Joe Lucia (12484)
                            Ridge-----


                            Most engine stands have four mounting legs. So, using the four legs with four 3/8-16 grade 8 bolts it will easily support a big block PROVIDING that the bolts are torqued to 35 lb/ft, or so, PRIOR to putting weigth on them.

                            I've had big blocks on an engine stand for a long while. Of course, the last one I had on there didn't weigh anything like 665 pounds.
                            Sounds like a lightweight ZL1, Joe....
                            Good carburetion is fuelish hot air . . .

                            Comment

                            • Joe L.
                              Beyond Control Poster
                              • February 1, 1988
                              • 43211

                              #15
                              Re: Puling the motor

                              Originally posted by Ridge Kayser (45955)
                              Sounds like a lightweight ZL1, Joe....

                              Ridge-----

                              A big block with a weight less than a small block! What more could one ask for?
                              In Appreciation of John Hinckley

                              Comment

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