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Old Jan 29, 2003 | 07:13 AM
  #1  
Jermafenser's Avatar
Jermafenser
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From: MD
Noise?

This noise in my '79 always has been bothering me and I cannot quite pinpoint it. When I give it gas, it makes a whirring/vaccum-motor-like noise between the engine and transmission. It is not as loud on the highway as it is at low speeds. I have the 351M and C6 trans.

Any ideas?

I'm no expert on in-depth repairs.
 
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Old Jan 29, 2003 | 08:45 AM
  #2  
73Custom's Avatar
73Custom
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From: SD
Noise?

Does it do it when you are parked too? when idling? Does it seem to change with rpm change? Does it change when you step on the brake pedal?

Let's see if we can track this noise down...

Marty
 
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Old Jan 29, 2003 | 11:05 AM
  #3  
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Mauser8mm
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From: Bothell USA
Noise?

Hello, my 351M was making the same noise. It turned out to be a vacuum leak. Since I put the new carb on it dosn't make the noise any more, so check for a vacuum leak.

Good Luck.
 
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Old Jan 29, 2003 | 08:21 PM
  #4  
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Jermafenser
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From: MD
Noise?

It makes that noise only when I give it gas. If I'm at a dead stop and I press down the gas pedal halfway, it's loouuud!

Vaccum leak? Wouldn't be surprised.

I'll check into that and get back at y'all.
 
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Old Feb 4, 2003 | 09:31 AM
  #5  
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Jermafenser
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From: MD
Noise?

I found the noise. Looks like the flex fan.

Is it supposed to turn with the engine?
 
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Old Feb 4, 2003 | 10:19 AM
  #6  
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From: Conway Arkansas
Noise?

If you have a fan w/o a clutch it'll always turn with the motor.. Being very loud. Id go with a clutch fan, or totoally do away with the fan and use an electric fan with a thermostat.
I run a electric fan and I love it.
 
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