The Ministry of Useful Stuff

Link An excellent fundamentals course on how torque and horsepower are related, and how TORQUE is what makes the car GO!
Link This is some history on the GM 660 Engine block, (2.8, 3.1, 3.4, FWD, RWD, etc.)
Link This is some info on transmissions put in GM vehicles since 1978, as well as the history of these transmissions.
Link Is it just an ALDL connector, or a gateway into the mind of your car's computer? More info here on the ALDL connector and the 'field service' mode.
Link This is a beretta.net tech page, but it goes a little into detail on how MPFI differs from SFI from a GM tech's standpoint.