Tech article by BwoncoHowie
The purpose of this article is to explain and cover some basic info about do it yourself C-4 Valve body service. The actual valve body is from a 1974 Bronco, therefore the illustrations may differ slightly from what you may be working on. If you are inexperienced as a mechanic, perhaps you should get help when performing the steps shown below. It is recommended that you read the entire article first so you may prepare all the tools and materials as well as a clean work environment. After reading through the article first, you can then make notes on where your valve body may need attention. Some steps that are performed later may be mentioned early in the article in order to save time and computer space. VB is referring to Valve Body.