3.1-3.4 cylinder head
Diagnosing and Correcting Leaks

GM 3.1 and 3.4 Cylinder Head – Manifold Issues

December 26, 2015

GM 3.1-3.4 Cylinder Head and Manifold Issues Confused about 3.1 / 3.4 Cylinder Head Types. Installers are not finding out until it is too late and the Cylinder Head is already installed. If you do own […]