LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Check this sound out guys

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Old Jun 12, 2010 | 10:48 AM
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Default Check this sound out guys

http://tinypic.com/r/70v1hx/6


Sorry i couldnt get any video, This sound is somewhat getting louder daily. At idle the sound is really loud but once you go over 1k rpm it fades out and you can hardly hear anything. I took my phone under the car and near the torque converter, Thats where is the loudest.

Could this be a bad torque converter?
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Old Jun 12, 2010 | 11:51 AM
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any suggestions? im just not sure a torque converter can makes that sound?
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Old Jun 12, 2010 | 11:58 AM
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i could not tell by sound. have you pulled the inspection cover and checked tightness of all bolts? seen if anything is loose nearby or close enough to tap at some times? if you can have some one turn engine by hand while you lay underneath and listen and watch.
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Old Jun 12, 2010 | 05:36 PM
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yea thats what i did, flexplate bolts are good. Once your under the car your automatically drawn to the torque converter. Great point on spinning the engine manually! ill give that a try.

If it was anything in the engine would the sound decrease on higher rpms? If thats the case, im screwed
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Old Jun 12, 2010 | 05:37 PM
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ill get a video up soon guys
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Old Jun 12, 2010 | 05:41 PM
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the video has NO visual, why?

Which noise at the end of the video you can hear 2 seperate noises.
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Old Jun 12, 2010 | 05:44 PM
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We need to see where you are so we can help you out better, it one point it seems like your at the top of the motor and then under the car.
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Old Jun 12, 2010 | 05:47 PM
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the iPhone i have can only record audio, no video.
As the car was started i got on a creeper and rolled under the car, when it gets loud that when my phone is pretty close to the torque converter. Sorry about that. I was just trying to give you guys an idea of what im hearing.

What do yall think?
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Old Jun 12, 2010 | 09:26 PM
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anything guys?
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Old Jun 13, 2010 | 02:22 PM
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Would a flexplate make that kind of sound?
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Old Jun 13, 2010 | 07:22 PM
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loose bolts to flexplate was one of the things i wondered. the bolts wouldn't back out all the way but enough to cause trouble.
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Old Jun 14, 2010 | 03:45 AM
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How does it sound at the start-up? I've seen the nose of starters break off and shed pieces down in there. Sounds pretty shitty, I would open her up before it gets really expensive...
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Old Jun 14, 2010 | 12:18 PM
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the start up is good, actually on start up it sounds pretty normal as the rpms jump to 1500 then on its way down to idle the sound appears, its getting louder daily and now the sound occurs more on higher rpms, 1400 max. if i take it to 3000rpm everything sounds and behaves the same. So im assuming it cant be in the engine...i hope lol
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Old Jun 14, 2010 | 12:19 PM
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Just put the car on stands so were pulling the tranny and all of the other goodies. I love doing this a 2nd time (:
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Old Jun 14, 2010 | 10:05 PM
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Originally Posted by red-_-z28
Just put the car on stands so were pulling the tranny and all of the other goodies. I love doing this a 2nd time (:
lol I would have just unbolted the converter and then start the thing. this way you have removed the trans from the equation. If you still have the noise then you have an engine or acc. problem. if not then you know its comming from the torque converter or the pump.
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Old Jun 14, 2010 | 10:16 PM
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its a cracked flexplate lol
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Old Jun 16, 2010 | 07:57 PM
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that is at least a fairly inexpensive part to fix.
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