1. XMAN JR

    XMAN JR Well-Known Member

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    Here is where I am at. My dad had his 440 built for his (now mine) 67 GTX. Just before he had passed away we got the engine in the car. We got every thing on & got it running. But that's it. No fine tuning No setting the timing. I got the cam card & the engine is not stock. I have no idea what to set the timing at. All I remember is dad telling the engine builder to step it up alittle. I know nothing about it. All I could find is the cam card. Comp cam intake lift 477 exhaust lift 480 intake duration 224 exhaust duration 230 110 lobe separation 106 intake center line rpm range 1600-5800 If this helps
     
  2. Bill Monk

    Bill Monk FBBO Gold Member FBBO Gold Member

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    Your initial should be somewhere around 14 with vacuum advance disconnected and plugged. All in should be somewhere near 34-36 but these are starting points, every engine is different. Using a hand held tach and vacuum gauge will help a lot as you set the initial. You are looking for the highest rpm and vacuum you can get without a stumble, Test and tune again, it's time consuming but worth the effort. I also suggest you read this article:
    http://4secondsflat.com/Ported Vs Constant Manifold Vacuum.htm
     
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    • khryslerkid

      khryslerkid Well-Known Member

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      Try 17*-18* at idle then 34* all in, mechanical with vacuum advance plugged.
       
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      • lewtot184

        lewtot184 Well-Known Member

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        it all depends on how many degrees are in the distributor. you can't just throw a number out for initial timing and hope everything will work.
         
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        • 68Moparmaniac

          68Moparmaniac Well-Known Member

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          When you fired up the engine for the first time did you do the cam break in procedure?
           
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          • XMAN JR

            XMAN JR Well-Known Member

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            yes
             
          • XMAN JR

            XMAN JR Well-Known Member

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            my dad put on a dual point distributor, date coded plug wires, coil ect. I put in all MSD box distributor coil plug wires
             
          • steve340

            steve340 Well-Known Member

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            While the engine is new and running in it is better to be a little conservative on the timing.
            12 degrees initial and no more than 36 total.
             
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            • 66Satellite47

              66Satellite47 FBBO Gold Member FBBO Gold Member

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              Put a timing tape on it, 36*total probably a good number for stock heads.
               
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