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  • Whining Transmission

    As of recently, my Turbo 400 AT started whining. It has a large oil cooler and about 4,000 miles on it since I had it rebuilt. It is a RPM whine, not a speed whine. The fluid was a little overfilled, so I drained it but that didn't help (6 ozs). The oil seems very clean. The Vehicle is a 304 cui '73 Commando with 86K original miles. I added Slick 50 AT conditioner last night and it didn't help either. It shifts and runs great. I doesn't seem to whine in reverse, or barely in park but it does in neutral and most apparent when the RPMs are higher in the Drive. Anybody have any suggestions?

  • #2
    I can't speak for your trans specifically, but when I rebuilt the trans in my M151, I put in all new gears. About 5-600 miles later it started whining and finally leveled off. I attributed it to gear wear in. It's a similar issue with differential gears. They seem to develop a whine and one just has to live with them.

    Although, in all M151s the diff gears are so loud you need ear plugs.

    That's about all I can offer.

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    • #3
      Its the gear ratio its to low mine does the same thing 250000+ miles on it.
      Last edited by Military_Man; 06-20-2006, 01:41 AM.

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