What is the wheel bolt pattern on a 1974 Chevrolet Blazer 4x4?

The wheel bolt pattern on a 1974 Chevrolet Blazer 4x4 is 6 bolts with a spacing of 5.5 inches (or 139.7 mm). This is commonly referred to as a 6x5.5 bolt pattern. The Blazer typically uses 1/2-inch wheel studs. Always confirm with specific vehicle details or consult a manual for precise specifications.