I had a gear drive and it made the most god awfull noise, I thought the whole front of my motor was going to come out. I pulled it and sold to a friend and he is still running it in his 347 2 1/2 years later. I guess it works I just didn't like the sound in mine. It didn't have the whine like the one's in the old muscle cars. I would suggest either a good double rollerchain or if you are stuck on a gear drive look into a pete jackson or another "quality" drive.
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