In this Summit Racing Quick Flicks, Al covers the differences in universal joints by first going over the difference in outside locking and inside locking u-joints. Then Al breaks down the different U-Joint types by measurement size to help you identify which one is in your vehicle. Al rounds out this video with a little bit of info on how to get the proper measurement for a drive shaft for your project vehicle. http://www.summitracing.com/redirect?banner=SocialYT4570 source
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