Pro Series Chevy Big Block Cylinder Head Hex Stud Kit
Pro Series Chevy Big Block Cylinder Head Hex Stud Kit
SKU: SKU: 722-81949
In stock
Product Details
Features
- Fits Chevy Big Block Mark IV applications including 396, 402, 427 and 454 engines
- Stud kit with Hex hardware and 35 Chromoly construction for performance engine builds
- Provides strong, consistent clamping force to support head gasket sealing and cylinder pressure control
- Complete application-specific kit; verify cylinder head style and block thread requirements
Description
Upgrade your Chevy Big Block build with a Pro Series cylinder head stud kit engineered for stronger clamping force, accurate torque readings, and reliable cylinder head sealing. Built for performance engine assembly, this kit helps improve head gasket retention and long-term durability under higher cylinder pressure.
Improved Head Alignment & Clamping
Stud-style fasteners help guide the cylinder head into position during assembly while providing strong, consistent clamping force for improved head gasket sealing.
Performance Fastener Construction
Constructed from 35 Chromoly with a Black finish, this kit is designed for strength, corrosion resistance, and dependable performance during demanding engine operation.
Accurate Installation
Hex fastener design and matched hardware support more consistent torque readings during installation. Follow the included or manufacturer-recommended torque sequence and lubricant requirements.
Complete Application-Specific Kit
Sold as a Kit. Verify cylinder head style, block thread size, and application notes before installation to ensure proper fitment.
Specs
| Fastener Color | Black |
| Fastener Material | 35 Chromoly |
| Fastener Style | Stud |
| Head Style | Hex |
| Quantity | Sold as a Kit |
Engine Fitment
COMPATIBLE WITH
CHEVROLET BIG BLOCK V8
• 6.5L / 396 in³
• 6.6L / 402 in³
• 7.0L / 427 in³
• 7.4L / 454 in³
• 8.1L / 496 in³ stroker combinations (application-specific verification required)
COMMON VEHICLE APPLICATIONS
Chevrolet Chevelle / El Camino (Big Block equipped)
Chevrolet Camaro (Big Block equipped or swapped)
Chevrolet C10 / C/K Trucks (Big Block equipped)
Chevrolet Impala / Caprice (Big Block equipped)
Marine, street/strip, and performance Big Block Chevy builds
NOTES
Designed for Big Block Chevy engine platforms.
Verify cylinder head generation, port style, fastener length, washer requirements, and torque specifications before installation.
Not compatible with Small Block Chevy, LS, or LT engine platforms.
Q&A
What engines are these cylinder heads compatible with?
These cylinder heads are designed for COMPATIBLE WITH, CHEVROLET BIG BLOCK V8 GEN. II (MARK IV).
Are these heads assembled or bare?
Configuration should be confirmed in the product details.
What material are these cylinder heads made from?
They are made from aluminum, which helps reduce weight and improve heat dissipation.
Will these cylinder heads improve engine performance?
Yes, performance cylinder heads are designed to improve airflow, which can increase horsepower, torque, and overall engine efficiency.
Are these a good upgrade over stock cylinder heads?
Yes, these cylinder heads are a strong upgrade for improving airflow and overall engine performance compared to factory heads.
Do these heads require additional components for installation?
Depending on your setup, additional components such as gaskets, pushrods, valve train components, or tuning may be required.
Are these suitable for street or race applications?
These cylinder heads can be used for street performance and performance builds depending on the overall engine combination.
Emissions Notice
This product does not require an Executive Order in California. By nature of its design this product does not require an emissions certification.
Pro Series Chevy Big Block Cylinder Head Hex Stud Kit
Upgrade your Chevy Big Block build with a Pro Series cylinder head stud kit engineered for stronger clamping force, accurate torque readings, and reliable cylinder head sealing. Built for performance engine assembly, this kit helps improve head gasket retention and long-term durability under higher cylinder pressure.
Improved Head Alignment & Clamping
Stud-style fasteners help guide the cylinder head into position during assembly while providing strong, consistent clamping force for improved head gasket sealing.
Performance Fastener Construction
Constructed from 35 Chromoly with a Black finish, this kit is designed for strength, corrosion resistance, and dependable performance during demanding engine operation.
Accurate Installation
Hex fastener design and matched hardware support more consistent torque readings during installation. Follow the included or manufacturer-recommended torque sequence and lubricant requirements.
Complete Application-Specific Kit
Sold as a Kit. Verify cylinder head style, block thread size, and application notes before installation to ensure proper fitment.
COMPATIBLE WITH
CHEVROLET BIG BLOCK V8
• 6.5L / 396 in³
• 6.6L / 402 in³
• 7.0L / 427 in³
• 7.4L / 454 in³
• 8.1L / 496 in³ stroker combinations (application-specific verification required)
COMMON VEHICLE APPLICATIONS
Chevrolet Chevelle / El Camino (Big Block equipped)
Chevrolet Camaro (Big Block equipped or swapped)
Chevrolet C10 / C/K Trucks (Big Block equipped)
Chevrolet Impala / Caprice (Big Block equipped)
Marine, street/strip, and performance Big Block Chevy builds
NOTES
Designed for Big Block Chevy engine platforms.
Verify cylinder head generation, port style, fastener length, washer requirements, and torque specifications before installation.
Not compatible with Small Block Chevy, LS, or LT engine platforms.
Specifications:
| Fastener Color | Black |
| Fastener Material | 35 Chromoly |
| Fastener Style | Stud |
| Head Style | Hex |
| Quantity | Sold as a Kit |
