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Flexplate/converter issues and possible trans build

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Old Aug 2, 2013 | 09:02 PM
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Default Flexplate/converter issues and possible trans build

I came home from work yesterday and about halfway home (1 mile commute lol) I started hearing a knock. Got it home and listened to it for a minute and its a regular knock. You could set your watch to it. So my first thought was a bearing. Pulled the dipstick and the oil is clean, still carried good oil pressure too.

The noise was coming from the bell housing area so I thought the converter bolts had worked loose. Pulled the starter and the converter bolts are all tight. I grab the flexplate and can rotate it 5-10* before it clunks and tries to turn the crank. It moves much more freely than when I turn over the motor by hand. Now I'm thinking either broken flexplate or loose bolts.

If it is broken I'm fearing a ballooned converter as well. I've sprayed a 150 shot for about 10 full passes on a yank 3600. It's not a nitrous converter so its a possibility right?

So now I'm going to pull the trans and see what's up. While its out I may build up the 60e. I'm wondering if this is something the DIY guy can handle with mechanical aptitude. I'd like to try it since I prefer to do all my own work and have to this point.

Any thoughts on what the issue is and what collateral damage I should be looking for? Anybody building their own 4l60e with some insight or links?
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