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  1. #1

    Default 99 7.4L timing adjustment?

    How is the timing set/djusted on the 99 7.4L 454's?

  2. #2

    Default

    I'm pretty sure it is the same procedure as my '98 5.7. You hook up a medium to high end scanner (one that is capable of reading the cam retard parameter. this seems to be the hardest part of the procedure). Then adjust the distributor until cam retard is between -2 and +2 degrees.
    '98 K1500 Suburban LS 5.7 L 4L60E NV246 ARB
    '92 Ford Explorer XLT 4x4 4.0 L A4LD BW13-54 Trac-loc rear
    "My toys were the greasy cogs and springs and pistons that lay around all over the place, and these, I can promise you, were far more fun to play with than most of the plastic rubbish children are given nowadays." Danny in Roald Dahl's Danny The Champion of the World

  3. #3

    Default

    anybody know if distributor cap on 1999 Chevy 7.4L is supposed to be able to rotate freely, have been having a hard time getting truck to start and noticed it was really loose?

  4. #4

    Default

    Absoutely NO that will change the cam retard if the whole distributer rotates. See if the clamp down bolt is loose and have someone set the cam retard.
    Quote Originally Posted by tmise View Post
    anybody know if distributor cap on 1999 Chevy 7.4L is supposed to be able to rotate freely, have been having a hard time getting truck to start and noticed it was really loose?
    Last edited by redvett; 04-07-2013 at 07:27 PM.

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