Recently, when I drive my car and my trannsmission shifts to 2nd, it makes a grinding noise. I have a '69 Nova with a 350 and a Holley QuadraJet. The transmission is a Powerglide. Does this sound like a transmission problem, or could it be something else? I can hear a sort-of grinding noise on the inside of my car, and it feels like it's under my feet (which is why I'm thinking it may be a transmission problem). Has anyone else had this problem, or are there any transmission guys out there that have a solution or can even tell me what might be doing this? If you need to know anything else about the car I'll help as best as I can. Thanks guys!