383 power upgrade help

Another book that I consider totally invaluable is "Old Reliable The Practical 440 Race Motor" by Don Dulmage. It is a fantastic resource whose ideas can easily be transferred to the 383. While you may not be building a race motor, it covers in depth DIY things that will save money and teach you things that will be with you forever. The only catch is finding a copy. It's been out of print for a while now, but they still pop up from time to time.