What material are these ARP head studs made from?

These head studs are manufactured from ARP's proprietary 8740 chromoly steel. This material is well-known for its strength and durability, making it suitable for high-performance engine applications that experience significant clamping loads and temperature fluctuations.

What is the advantage of 12-point nuts over standard hex nuts?

The 12-point nuts included in this kit offer an advantage during installation, especially in confined engine compartments. They provide more wrenching surface area and allow for easier access with a socket, simplifying the tightening process compared to traditional six-point nuts.

Does this kit include everything needed for installation?

This kit includes the head studs, hardened parallel ground washers, and 12-point nuts. It is recommended to consult ARP's installation instructions for any additional components or preparation steps required for your specific engine build.

ARP SB Chevy Head Stud Kit 234-4321

Name: ARP SB Chevy, 18A w/ raised intake casting and 64 Head Stud Kit
Brand: ARP
SKU: arp-arp-sb-chevy-18a-w-raised-intake-casting-and-64-head-stud-kit-t14-854168
Price: 314.55 USD
Availability: BackOrder

ARP SB Chevy, 18A w/ raised intake casting and 64 Head Stud Kit

$314.55

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 head stud kit for 18A blocks with raised intake casting.

Key Features

Fits SB Chevy 18A blocks with raised intake casting.
Constructed from ARP's 8740 chromoly steel for high strength.
Centerless ground studs ensure a straight profile.
Parallel ground threads maximize thread engagement.
Includes hardened parallel ground washers.
Features 12-point nuts for easier installation in tight spaces.

⚠️ 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

Starting with the 18A blocks that feature a raised intake casting, this ARP head stud kit is built to handle the demands of a performance small-block Chevy engine. These studs are made from ARP's proprietary 8740 chromoly steel, a well-known material for its strength and ability to withstand high clamping loads and temperature cycles. This makes them a solid choice for rebuilding or upgrading your engine's top end, ensuring a reliable seal between the cylinder head and the block.

ARP is a popular name in high-performance engine components, and this kit is no exception. The studs are centerless ground for a perfectly straight profile, and they come with parallel ground threads to ensure maximum thread engagement. This attention to detail helps prevent cylinder head distortion and provides a more consistent clamping force across the entire cylinder head surface. You'll also find that the kit includes hardened parallel ground washers and 12-point nuts, which are easier to work with in tight engine bays compared to standard hex nuts.

When you're putting together a performance small-block Chevy, especially one with the 18A block and its specific intake casting, using quality head studs like these from ARP is crucial for long-term reliability. They are designed to provide a more consistent and reliable clamping force than stock head bolts, which is essential for preventing head gasket leaks under increased cylinder pressures.