Cylinder Heads compatible with GM® 6.5L Series Add to cart GM 6.5L (90 DEGREE) LOADED CYLINDER HEAD Cylinder Head compatible with GM®, 6.5L Series, Cylinder Head $570.00 Add to cart GM 6.5L LOADED CYLINDER HEAD (65 DEGREE) Cylinder Head compatible with GM®, 6.5L Series, Cylinder Head $570.00