Why use main studs instead of bolts for my Pontiac engine rebuild?

Main studs offer more consistent clamping force on the main bearing caps compared to stock bolts. They are also easier to install and remove multiple times during the engine building process, which helps ensure proper torque and alignment.

What material are these ARP main studs made from?

These studs are manufactured from ARP's proprietary 8740 chromoly steel. This material is heat-treated to provide the strength and durability needed to withstand the stresses of a performance engine.

Does this kit include everything I need for installation?

This kit includes the ARP main studs, nuts, and washers. You will need to refer to the manufacturer's installation instructions for proper torque specifications and any additional assembly procedures.

ARP Pontiac 400-455 Main Stud Kit 194-5401

Name: ARP Pontiac 400-455 2-Bolt Main Stud Kit
Brand: ARP
SKU: arp-arp-pontiac-400-455-2-bolt-main-stud-kit-t14-304784
Price: 99.35 USD
Availability: BackOrder

ARP Pontiac 400-455 2-Bolt Main Stud Kit

$99.35

On Backorder

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

ARP Pontiac 400-455 2-bolt main stud kit. For rebuilding your Pontiac V8 engine.

Key Features

Fits Pontiac 400 and 455 2-bolt main engines.
ARP 8740 chromoly steel construction for strength.
Heat-treated for improved durability under stress.
Rolled threads offer increased fatigue life.
Provides more consistent clamping force than stock bolts.
Includes studs, nuts, and washers.

⚠️ 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

If you're rebuilding the bottom end of your Pontiac 400 or 455 V8, this ARP main stud kit is a solid choice for ensuring the crankshaft stays securely in place. These studs replace the factory bolts that hold your main bearing caps, offering a more robust clamping force that's crucial for high-performance applications or just a reliable rebuild.

ARP is well-known for making strong fasteners, and this kit is no exception. The studs are made from ARP's proprietary 8740 chromoly steel, which is heat-treated to handle significant stress. They feature rolled threads, which are stronger than cut threads and help prevent fatigue. This kit is designed specifically for Pontiac 2-bolt main blocks, meaning it fits right without modification.

Using main studs instead of bolts is a common practice when building a performance engine because they provide more consistent clamping force and are easier to install repeatedly during the build process. This kit includes the studs, nuts, and washers you'll need to get the job done right.