What material are these head bolts made from?

These head bolts are made from ARP's proprietary 8740 chromoly steel. This material is heat-treated to achieve a tensile strength of 200,000 psi, making them well-suited for performance engine applications.

Are washers included with this head bolt kit?

Yes, the kit includes hardened parallel ground washers. These washers help to ensure that the clamping force is distributed evenly across the cylinder head surface when the bolts are torqued down.

What is the recommended installation procedure for these bolts?

It is important to follow ARP's recommended torque-to-yield procedure for installation. This ensures proper clamping force and helps prevent any potential issues with the engine build. Always clean bolt holes before installation.

ARP SB Chevy 23 Degree Head Bolt Kit 134-3604

Name: ARP SB Chevy 23 Degree Pro Action Head - Head Bolt Kit
Brand: ARP
SKU: arp-arp-sb-chevy-23-degree-pro-action-head-head-bolt-kit-t14-115216
Price: 140.56 USD
Availability: BackOrder

ARP SB Chevy 23 Degree Pro Action Head - Head Bolt Kit

$140.56

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

ARP SB Chevy 23 Degree Pro Action Head Bolt Kit 134-3604. Well-built fasteners for your small block Chevy.

Key Features

Fits SB Chevy 23 Degree Pro Action cylinder heads.
Constructed from ARP's 8740 chromoly steel for high strength.
Features a tensile strength of 200,000 psi.
Includes hardened parallel ground washers for even load distribution.
Designed for reliable clamping force in performance applications.
Part number 134-3604.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

This is the ARP 134-3604 head bolt kit, specifically made for SB Chevy 23-degree cylinder heads. If you're rebuilding the top end of your small block Chevy and want a reliable way to secure your heads, this kit is a solid option. ARP has a good reputation for making strong fasteners, and these head bolts are designed to handle the pressures that come with performance engine builds.

What makes these bolts stand out is their construction. They're made from ARP's proprietary 8740 chromoly steel, which is heat-treated to give them a tensile strength of 200,000 psi. This means they can handle the clamping forces needed to keep your heads sealed, even under demanding conditions. The kit includes hardened parallel ground washers, ensuring even load distribution when you torque them down. It's important to follow ARP's recommended torque-to-yield procedure for these bolts to ensure proper clamping and prevent any issues down the road.

When you're working on an engine, using quality hardware is key to a long-lasting build. This kit is designed for a direct fit on SB Chevy engines with 23-degree heads, simplifying the installation process. Make sure to clean your bolt holes thoroughly before installation to ensure accurate torque readings.