ARP High Performance Series Hex Head Bolt Kit

Buick 350 CID Engines 1980–1987

Part #: 120-3601

Overview

The ARP Hex Head Bolt Kit is a high-quality fastener solution designed specifically for Buick 350 CID V8 engines from 1980 to 1987. Engine builders and performance enthusiasts rely on ARP's advanced fastener technology to ensure durability, strength, and reliability under demanding conditions. Whether you're rebuilding your engine for street performance, restoration, or racing, this bolt kit provides the peace of mind that comes with proven, high-performance hardware.

Constructed with precision and engineered for excellence, this kit helps support the integrity of your engine assembly. ARP's fasteners are known for their exceptional strength and consistency, making them ideal for high-performance applications where maintaining proper clamping force is critical. Installing these bolts ensures your engine components are securely fastened, reducing the risk of failure and enhancing overall engine longevity.

Key Features

Designed for enthusiasts who demand the best, the ARP Hex Head Bolt Kit offers several key features:

• Material Excellence: All bolts are made from ARP's proprietary 8740 chromoly steel, known for its high tensile strength and toughness, rated at 180,000 psi.
• Cold Forged Construction: The bolts are cold forged to ensure molecular integrity, providing superior strength and fatigue resistance compared to standard fasteners.
• Heat Treated & Machined: Each bolt is heat treated prior to thread rolling and machining, ensuring consistent hardness and durability across the entire set.
• Premium Fasteners & Washers: The kit includes twenty high-performance hex head bolts and twenty chamfered washers made from premium grade 8740 steel, designed to provide optimal load distribution and secure fastening.
• Assembly Lubricant: A 1/2 oz. pack of ARP Ultra-Torque fastener assembly lubricant is included to ensure proper torque application and prevent galling during installation.
• Engine Compatibility: Specifically engineered for Buick 350 CID engines from 1980 to 1987, ensuring a perfect fit and reliable performance.
• Application Versatility: Suitable for rebuilds, performance upgrades, or restoring original engine specifications with high-quality fasteners.

Construction & Design

The ARP Hex Head Bolt Kit features a robust design utilizing ARP's advanced manufacturing processes. The bolts are crafted from 8740 chromoly steel, a material renowned for its exceptional strength-to-weight ratio and fatigue resistance. The cold forging process aligns the grain structure of the steel, maximizing tensile strength and ensuring the fasteners can withstand high-stress environments. The heat treatment process further enhances the hardness and durability of each bolt, providing long-lasting performance.

The hex head design allows for easy installation and removal using standard tools, while the chamfered washers help distribute clamping forces evenly across the mating surfaces. The inclusion of ARP Ultra-Torque lubricant ensures proper assembly torque, minimizing the risk of thread damage and ensuring consistent clamping force during engine assembly.

Performance & Reliability

Engine builders and performance enthusiasts trust ARP fasteners for their proven strength and reliability. This kit helps support the engine's structural integrity during high-performance operation, whether in street, strip, or racing environments. The high tensile strength of the 8740 steel fasteners ensures they maintain their clamping force under extreme conditions, reducing the likelihood of bolt failure or loosening over time.

Installation & Fitment

The ARP Hex Head Bolt Kit is designed for straightforward, bolt-on installation. It fits directly onto the factory or aftermarket engine components of Buick 350 CID engines from 1980 to 1987. No special modifications, cutting, or drilling are required. For optimal results, use the included Ultra-Torque lubricant and follow ARP's recommended torque specifications during assembly to ensure proper clamping force and engine reliability.

• Complete set of twenty high-performance hex head bolts
• Twenty chamfered washers for secure fastening
• 1/2 oz. ARP Ultra-Torque fastener assembly lubricant
• Designed specifically for Buick 350 CID engines (1980–1987)

What's Included

• Twenty ARP High Performance Series Hex Head Bolts
• Twenty premium grade chamfered washers
• 1/2 oz. ARP Ultra-Torque fastener assembly lubricant

Ideal For

This bolt kit is perfect for engine rebuilds, performance upgrades, or restorations of Buick 350 CID V8 engines. It provides the strength and reliability needed for high-stress applications, making it suitable for street performance, racing, or demanding daily driving conditions.

Emissions Note

This product is designed for off-road, racing, or restoration use only. It may not be legal for use on pollution-controlled vehicles in all jurisdictions. Please check local regulations before installation.