About the Engine
The engine is the heart of any vehicle, responsible for generating power and propelling it forward. One crucial component of the engine is the cylinder head, which houses the combustion chambers and valves. To ensure a secure and leak-free seal between the cylinder head and engine block, it is essential to use high-quality head bolts. ARP (Automotive Racing Products) is a renowned manufacturer of performance fasteners, including head bolts. In this article, we will discuss the ARP SBC (Small Block Chevy) head bolts and their torque specifications.
ARP SBC Head Bolts Torque Specs
When installing the cylinder head on a Small Block Chevy engine using ARP head bolts, it is crucial to follow the recommended torque specifications. The correct torque ensures proper clamping force, preventing head gasket failure and maintaining engine performance. Below is a table outlining the ARP SBC head bolts torque specifications in both foot-pounds (ft. lbs.) and Newton-meters (Nm):
| Head Bolt | Torque Specification (ft. lbs.) | Torque Specification (Nm) |
|---|---|---|
| 1 | 70 | 95 |
| 2 | 70 | 95 |
| 3 | 70 | 95 |
| 4 | 70 | 95 |
| 5 | 70 | 95 |
| 6 | 70 | 95 |
| 7 | 70 | 95 |
| 8 | 70 | 95 |
| 9 | 70 | 95 |
| 10 | 70 | 95 |
Steps for Torquing ARP SBC Head Bolts
To properly torque the ARP SBC head bolts, follow these steps:
1. Ensure the cylinder head and engine block mating surfaces are clean and free of debris or old gasket material.
2. Apply a thin coat of engine oil to the threads and washer face of each head bolt.
3. Install the head bolts in their proper locations, ensuring they are threaded in straight and not cross-threaded.
4. Begin the torquing process by tightening each head bolt to 30 ft. lbs. (41 Nm) in the proper sequence specified by the engine manufacturer.
5. Repeat the torque sequence, increasing the torque to 60 ft. lbs. (81 Nm).
6. Finally, complete the torque sequence by tightening each head bolt to the final torque specification of 70 ft. lbs. (95 Nm).
Following these torque specifications and steps will ensure the proper clamping force and integrity of the cylinder head installation. It is essential to use a reliable torque wrench and follow the specific sequence recommended by the engine manufacturer to achieve accurate and consistent results.
Remember, using high-quality head bolts like those manufactured by ARP is crucial for the longevity and performance of your engine. Always refer to the manufacturer’s instructions and specifications for your specific engine model to ensure the correct torque values and procedures are followed.
In Conclusion
Properly torquing the head bolts is a critical step when installing the cylinder head on a Small Block Chevy engine. ARP SBC head bolts provide the necessary strength and reliability for this task. By following the recommended torque specifications and steps outlined in this article, you can ensure a secure and leak-free seal, promoting optimal engine performance and longevity.