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4l80 not dyno proof!! a little help please

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Old 09-22-2006, 11:46 AM
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Default 4l80 not dyno proof!! a little help please

I put my 68 impala on the dyno today! 6.0 iron block ls6 intake tr 224 cam and headers with a stock 4l80. At 5200 it BROKE LOOSE from the block and took out the whole bellhousing and at least one ear off the block and the drive shaft in half but left the yoke still in the trany. No tailshaft damage but I now have a 4l80 with no bellhousing. HP was at 320. Any help would be appreciated. Thanks Woody
Old 09-22-2006, 12:44 PM
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what kind of truck?
Old 09-22-2006, 01:35 PM
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not a truck a 1968 Impala SS convertable. 01 6.0 and 4l80
Old 09-23-2006, 09:28 PM
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please tell me it didnt have the stock strall converter
Old 09-24-2006, 07:31 AM
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tey it was all stock but once I got it on a lift I found out what happened. The rear u-joint let go and the driveshaft got loged between the pipes and the floor and the sudden jar I guess split the bellhousing all the way around. I have pics I took just because I had never seen it before.
Old 09-24-2006, 07:46 AM
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Post up those pics.... that just freak stuff right there.... Any bad angles on the driveline?
Old 09-24-2006, 08:36 AM
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sounds like some cool ****...unfortunate though...
Old 07-04-2008, 10:55 PM
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Hey you still on this site




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