At some point, even the best transmissions need to be rebuilt. How to Rebuild and Modify GM Turbo 400 Transmissions is the first-ever all-color rebuild and modify book on GM Turbo 400 transmissions. It will take readers through the complex rebuild procedure of GM's most popular rear-wheel drive automotive transmission, along with performance upgrade procedures in a series of full-color photos and time-saving tips as part of the buildup. Whether you're an amateur or professional, this book would be an excellent addition to your automotive library.