Hamilton Cams 07-H-001STG1 Stage 1 Performance Cylinder Head greatly improves airflow on your 1989-1998 Dodge 5.9L Cummins. Competition or street ready, this head flows 40% more than a stock head right out of the box. The intake port offers the most velocity of any port Hamilton has offered yet.

This translates to reduced turbo lag and lower exhaust gas temps throughout your desired rpm band. Even a stock truck will see an improvement. A thicker deck and casting is used to reduce heat warping and it also is more resistant to cracking compared to a factory style cylinder head. The factory style intake shelf offers more flow to cylinder 1 and 6 versus a factory casting by reducing restrictions in the ports, essentially providing the same thing a side draft intake does.

If selected, this head is machined for fire ring grooves to be used only in the head. The fire ring groove is cut for an OD of 4.550″ and a .105 wire. This Stage 1 cylinder head is machined for a 1.750″ intake valve and a 1.750″ exhaust valve.

Hamilton Cams Cylinder Head Features:

• Stage 1
• New Casting
• No Core Charge!Machined for 1.750″ Intake &a Exhaust Valves

THIS ITEM WILL SHIP TRUCK FREIGHT AND SHIPPING WILL BE ADDED