Classic/Antique Car Repair/whinning turbo 400

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Expert: - 1/26/2010


Question
I have a 350 chevy with a turbo 400 transmission in a 57 chevy. The car was stored for 20 years. After getting the car out and running the only problem i am having is the transmission makes a whinning(sounds just like a supercharger)noise for about 45 seconds when started cold. After that the noise stops and all is fine. Shifts are firm and solid. I changed the filter and had no improvement. Thanks for your help.

Answer
Hi Arn:
Sounds a lot like the fluid not getting to the gears fast enough.
Is the transmission fluid at the full level? Remember, you have to
drive TH-400 about 20 to 30 minutes to warm up the transmission before
you can check the fluid on a level surface. This is the only way to get
a true reading of he fluid level.

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Vern Bullock

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Visit my website at: http://www.classytransportation.com/ I can answer most questions about autos built in the 60's 70's and 80's. Specifically, Lincolns, Rolls Royces and the Excaliburs. Mechanical issues and technical questions are my expertise. I also have a general knowledge of most older automobiles. Keep in mind, I can only provide answers if the questions are very specific and complete. Without details, I can only speculate and that's not good for solving your problem.

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I have owned and maintained Silver Shadows for over 10 years now. I find most mechanics and even Rolls Royce mechanics have very little knowledge about these automobiles. I have researched these cars in quite a bit of detail and can pretty much tell you what is wrong, if you can describe the behavior in detail. I have saved quite a few RR owners a lot of money and aggravation due to improper diagnosis. I am the owner of Classy Transportation, LLC a luxury limousine service specializing in antique cars, classic cars, vintage cars and exotic cars.

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All around the Internet

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I hold a BS degree in computer science and a MS degree in mechanical engineering.

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I regularly compete at car shows and average around a dozen awards annually.

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