Car and Driver reviews and tests various hot rods and other cars. The site includes a series of buyer's guides for various makes and models.
Hot rod forums and other information.
News, reviews, and a discussion forum. They also have a "Project Journals" section.
The official website of the U.S. National Hot Rod Association. Includes news, reviews, video, and a whole lot more.
School of Hot Rod is a news and information portal with a community blog and a podcast.
A hot rod blog with videos, podcasts, and a whole lot of opinions!
TBucketPlans.com is a WordPress blog that covers news and topics related to the conversion of T-Buckets. This site does promote an eBook called "How to Build a T-Bucket Hot Rod Roadster for Under $3,000" quite heavily, but there is also some very useful information on the site.