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Top Street Performance

Pro Series 97-03 LS Cylinder Head Hex Bolt Kit

Pro Series 97-03 LS Cylinder Head Hex Bolt Kit

SKU: 734-82067

$130.75
$130.75 $148.58
Shipping calculated at checkout.

In stock

Top Street Performance (TSP) is committed to providing high-quality performance parts while complying with emissions regulations. This product is designed for use on vehicles that comply with federal emissions regulations. It is the customer’s responsibility to verify that this part is legal for use in their state or local jurisdiction. Check with your local emissions authority before purchasing.
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Product Details

Features

  • Fits GM LS Gen III/IV applications; verify cathedral or rectangular port compatibility before ordering
  • Bolt kit with Hex hardware and 35 Chromoly Steel construction for performance engine builds
  • Provides strong, consistent clamping force to support head gasket sealing and cylinder pressure control
  • Application-specific torque procedure listed in specs: 75 ft-lbs big, 25 ft-lbs small

Description

Upgrade your GM LS Gen III/IV build with a Pro Series cylinder head bolt 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.

Reliable Head Bolt Clamping
Application-specific head bolts provide strong, even clamping force to help maintain head gasket seal and cylinder pressure in performance engine builds.

Performance Fastener Construction
Constructed from 35 Chromoly Steel with a Black finish, this kit is designed for strength, corrosion resistance, and dependable performance during demanding engine operation.

Torque-Specific Installation
Designed for the listed application torque procedure: 75 ft-lbs big, 25 ft-lbs small. Always follow the correct torque sequence, lubricant instructions, and any re-torque requirements for your engine.

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

Torque 75 ft-lbs big, 25 ft-lbs small
Color Black
Fastener Style Bolt
Grade Performance
Head Style Hex
Material 35 Chromoly Steel
Quantity Sold as a kit

Engine Fitment

COMPATIBLE WITH
GM LS SERIES V8 ENGINES - 1997–2003 STYLE
• 4.8L / 293 in³ (LR4)
• 5.3L / 325 in³ (LM7, L59)
• 5.7L / 346 in³ (LS1, LS6)
• 6.0L / 364 in³ (LQ4, LQ9)

COMMON VEHICLE APPLICATIONS
Chevrolet Corvette / Camaro / Pontiac Firebird (1997–2003 LS equipped)
GM Silverado / Sierra / Tahoe / Yukon (LS-based applications)
Pontiac GTO early LS swap applications
Popular Gen III LS swap builds

NOTES

Designed for 1997–2003 LS cylinder head fastener applications.

Verify correct head bolt/stud style for your block, cylinder head casting, and model year.

Not compatible with 2004–2020 LS applications unless specifically confirmed.

Not compatible with Gen V LT direct-injection engines, Gen I SBC, or Big Block Chevy engines.

Q&A

What engines are these cylinder heads compatible with?
These cylinder heads are designed for COMPATIBLE WITH, CHEVROLET SMALL BLOCK V8 GEN. III/IV (LS BASED), NOTE: Fits 1997-2003 applications.


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 35 chromoly steel, 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 affect vehicle emissions and is not subject to emissions compliance regulations.