Did 1973 318 V8 come from factory with plastic teeth on timing gears?

Small Block Mopar Engine

  1. Lasalle

    Lasalle Well-Known Member

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    Did 1973 318 V8 have plastic teeth on the timing gears from the factory?
     
  2. Oldmanmopar

    Oldmanmopar Going left turning right FABO Gold Member

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    Yes they did . The latest I had replaced one on was a 1988 318 truck.
     
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    • leechris81

      leechris81 FABO Gold Member FABO Gold Member

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      Sure enough. Here’s the 318 in my ‘73 Swinger at around 120k on the clock. 274D5213-8752-4C45-A22C-7F0E48CD46DE.jpeg 3498E7A5-410B-406E-83FC-069FC469A143.jpeg 8DD7AB2E-0E3F-4B31-84A3-28798E895B64.jpeg
       
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      • Lasalle

        Lasalle Well-Known Member

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        Thanks for your replies and pictures. Mine is a 73 Swinger also with 99K. I am not sure yet if that is a problem but a lot of other plastic mechanical parts on the car already broke.
         
      • leechris81

        leechris81 FABO Gold Member FABO Gold Member

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        Mine was not a problem yet. But it could not have been much longer before it was. I dropped the oil pan for a gasket and found all the plastic pieces in the pan. Decided at that time I might as well toss a cam/lifter set in while I was there and swap over to 4 bbl intake.
         
      • MOPAROFFICIAL

        MOPAROFFICIAL FABO Gold Member FABO Gold Member

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        Be a good idea to change it.
        You're more than likely pick up lost "umph" when you hit the pedal .
         
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        • Lasalle

          Lasalle Well-Known Member

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          What about the chain? Does that stretch and need to be changed also?
           
        • G70464

          G70464 Active Member

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          Change everything, the gear and the chain. Upgrade to a better quality also. They are interference motors.
           
        • Lasalle

          Lasalle Well-Known Member

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          What is an interference motor and a double roller?
           
        • Lasalle

          Lasalle Well-Known Member

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          got it
           
        • Krooser

          Krooser Building Chinese Free Engines since 1959...

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          For the average build a single chain and sprocket work fine.
           
        • 67Dart273

          67Dart273 FABO Gold Member FABO Gold Member

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          ...........And just to keep things "accurate" anything using a chain uses sprockets, not "gears."
           
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          • moparmarks

            moparmarks zippindippintie FABO Gold Member

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            Last year I bought a truck that had a worn out 1985 318 in it. I put 15w40 in it and then tried to start it on a 25* morning. Bam, shelled out the nylon timing set and bent 7 push rods. 2 so bad I couldn't remove them. Good times.

            20201118_154331.jpg
             
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            • 67Dart273

              67Dart273 FABO Gold Member FABO Gold Member

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              I once bought a 78 Ford LTD II "not running" which I "humorously" called "the SKUD missile." (Low flying, poorly guided missile.)

              Anyhow what had happened is that plastic junk had come off the sprocket, lodged in the oil pump, broke the pump drive AND THE CAM GEAR and so the crank was tore up some too. I bought a re-ring kit, a reground cam kit, new pump and cam gear, etc, and threw it together and drove it to work for about 100+ miles a day for something like 3 years.
               
            • krazykuda

              krazykuda Well-Known Member FABO Gold Member How-To Section Editor

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              Cogswell Cogs or Spacely Sprockets????
               
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              • Krooser

                Krooser Building Chinese Free Engines since 1959...

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                Grumpy Jenkins ran those Chebby engines with Jenuine GM plastic toothed timing sets cuz he said they produced less harmonics at 9,000 rpm.

                Who can question ol' Grumpy?
                 
              • Krooser

                Krooser Building Chinese Free Engines since 1959...

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                Impossible...everything has to perfect to run!!!!
                 
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