ARP Small Block Chevy Cylinder Head Hex Bolts 134-3601 — High‑Strength, Heat‑Treated Fastener Kit

These ARP 134-3601 high-performance hex head cylinder head bolts are a vehicle-specific kit engineered to secure Small Block Chevy heads with superior clamping consistency and durability.

Upgrade your Small Block Chevrolet engine with a trusted fastener set engineered for repeatable torque and long-term reliability. The ARP 134-3601 kit contains precision-manufactured hex head head bolts designed to reduce stretch and maintain clamping force under high heat and load conditions. Ideal for street performance builds, track cars, and engine rebuilds where dependable head retention matters, these bolts provide an upgrade over many factory fasteners.

What makes the ARP 134-3601 bolts better than stock hardware?

ARP bolts are made from premium alloy and heat-treated to tighter tolerances than typical OE head bolts. That results in less permanent elongation during installation and more consistent clamp load across all cylinders—important for head gasket life and combustion sealing.

• High-strength alloy construction for reduced stretch
• Precise machining and threading for consistent torque readings
• Heat treatment to maintain clamp under thermal cycling
• Made specifically to fit Small Block Chevy cylinder head geometry

How do I install these hex head fasteners correctly?

Follow ARP’s recommended torque sequence and use a calibrated torque wrench. Clean and lubricate fastener threads per instructions, and tighten in the factory sequence in multiple stages to achieve uniform clamp. Re-torque if ARP or engine builder guidance specifies after initial heat cycling.

• Hand-start all bolts to avoid cross-threading
• Tighten in the factory-specified sequence and increments
• Use ARP-specified lubricant for accurate torque-to-yield behavior
• Check bolt length and part number (134-3601) for correct application

Which engines and vehicles are compatible with part number 134-3601?

This kit is tailored for Small Block Chevy cylinder head applications where hex head bolts are required. It’s a vehicle-specific replacement set—verify fitment with your engine’s head and block combination or consult your machine shop before ordering.

• Designed for Small Block Chevy cylinder head configurations
• Ideal for performance rebuilds and high-load engines
• Check bolt length and thread pitch against original hardware
• Part number: ARP 134-3601 for accurate identification

Who this is for: Enthusiasts, engine builders, and mechanics restoring or upgrading Small Block Chevy engines who want stronger, more stable cylinder head fastening than most original-equipment bolts provide. If you need reliable head clamping for higher compression, forced induction, or long-term durability, the ARP 134-3601 kit is a purpose-built choice. Confirm part compatibility with your specific block and head preparation before installing.