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break in procedures on rebuild

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  • break in procedures on rebuild

    Just rebuilt the 770 in my 97 monte carlo. Iam wondering what the recommended break in procedure is, and also i bored the cylinders out .050 over on each. I am concerned about the jets in the carbs. Should I go with bigger jets? and if so what is the recommended size?

  • #2
    Re: break in procedures on rebuild

    Jets will be fine just open up the screws another 1/8 turn. For the first tank of fuel the on the new engine, pre mix at 40:1 and keep speed to 1/2 throttle and vary it.
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    • #3
      Re: break in procedures on rebuild

      Thanks alot! sounds good.

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