I have recently been working with others to create an LT1/LT4 specific site for F-body owners (similar to it's sister site LS1Tech). I am a founding member and will be occupied with this until we can become established. If you are not familiar with the terms previously mentioned, this may not be for you. I remember someone here owning a Trans Am, and I don't have the slightest what everyone else drives, but I'd encourage any enthusiasts to join the community:
LTXTech.com
SFC.McCauley*BK*