I have the same transmission in a '66 Impala. It was noisy when new so I called Richmond. They said they documented my claim and said if it failed within warranty that they would approach the situation then. I wasn't real happy with that but had no other options,really. As of now it has about 60,000 miles on it and the noise all but left within the first 1,000 miles or so. But now it wants to jump out of third gear whenever you shift into it at a low rpm. Call Richmond and ask them about it. It's just your best bet.