Pro Series 97-03 LS Cylinder Head Hex Bolt Kit
Upgrade your engine build with the Top Street Performance Pro Series 97-03 LS Cylinder Head Hex Bolt Kit. Designed specifically for early GM Gen III LS applications, this LS cylinder head bolt kit provides the strength and clamping force needed to help maintain reliable head gasket sealing in street, performance, and racing engines. Whether you're assembling a fresh LS1, replacing cylinder heads, or completing an engine rebuild, these 97-03 LS head bolts provide dependable fastening performance.
Reliable Cylinder Head Clamping Force
Designed to securely fasten the cylinder heads to the engine block, this LS head bolt kit helps maintain consistent cylinder head clamping force and dependable head gasket retention. Ideal for LS engine rebuilds, cylinder head replacement, and performance engine assembly projects.
High-Strength Performance Construction
Manufactured from heat-treated 35 chromoly steel with a minimum tensile strength of 190,000 PSI, these LS cylinder head bolts are built to withstand demanding engine conditions. Threads are rolled after heat treatment and protected with a black oxide finish and oil coating for enhanced durability and corrosion resistance.
Designed for 1997-2003 Gen III LS Applications
Engine-specific design provides compatibility with LS1, LS6, LR4, LM7, L59, LQ4, and LQ9 engine combinations utilizing the 1997-2003 cylinder head bolt configuration. These Gen III LS head bolts are ideal for stock replacement, engine rebuilds, cylinder head upgrades, and LS swap projects.
Ideal for Engine Rebuilds & Head Gasket Service
Perfect for cylinder head installation, head gasket replacement, engine assembly, and performance engine projects where fresh LS cylinder head hardware is recommended. An excellent choice for maintaining proper head gasket sealing and long-term engine reliability in Gen III LS engines.
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.
• Not compatible with 2004-2020 LS cylinder head bolt applications.
• Not compatible with Gen V LT engines.
• Verify cylinder head casting and model year before ordering.
SPECIFICATIONS
Torque: 75ft-lbs big 25ft-lbs small / step 1 25ft-lbs ALL / step 2 50ft-lbs big bolts only / step 3 75ft-lbs big bolts only
Color: Black
Fastener Style: Bolt
Grade: Performance
Head Style: Hex
Material: 35 Chromoly Steel
Quantity: Sold as a kit
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Upgrade your engine build with the Top Street Performance Pro Series 97-03 LS Cylinder Head Hex Bolt Kit. Designed specifically for early GM Gen III LS applications, this LS cylinder head bolt kit provides the strength and clamping force needed to help maintain reliable head gasket sealing in street, performance, and racing engines. Whether you're assembling a fresh LS1, replacing cylinder heads, or completing an engine rebuild, these 97-03 LS head bolts provide dependable fastening performance.
Reliable Cylinder Head Clamping Force
Designed to securely fasten the cylinder heads to the engine block, this LS head bolt kit helps maintain consistent cylinder head clamping force and dependable head gasket retention. Ideal for LS engine rebuilds, cylinder head replacement, and performance engine assembly projects.
High-Strength Performance Construction
Manufactured from heat-treated 35 chromoly steel with a minimum tensile strength of 190,000 PSI, these LS cylinder head bolts are built to withstand demanding engine conditions. Threads are rolled after heat treatment and protected with a black oxide finish and oil coating for enhanced durability and corrosion resistance.
Designed for 1997-2003 Gen III LS Applications
Engine-specific design provides compatibility with LS1, LS6, LR4, LM7, L59, LQ4, and LQ9 engine combinations utilizing the 1997-2003 cylinder head bolt configuration. These Gen III LS head bolts are ideal for stock replacement, engine rebuilds, cylinder head upgrades, and LS swap projects.
Ideal for Engine Rebuilds & Head Gasket Service
Perfect for cylinder head installation, head gasket replacement, engine assembly, and performance engine projects where fresh LS cylinder head hardware is recommended. An excellent choice for maintaining proper head gasket sealing and long-term engine reliability in Gen III LS engines.
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.
• Not compatible with 2004-2020 LS cylinder head bolt applications.
• Not compatible with Gen V LT engines.
• Verify cylinder head casting and model year before ordering.
SPECIFICATIONS
Torque: 75ft-lbs big 25ft-lbs small / step 1 25ft-lbs ALL / step 2 50ft-lbs big bolts only / step 3 75ft-lbs big bolts only
Color: Black
Fastener Style: Bolt
Grade: Performance
Head Style: Hex
Material: 35 Chromoly Steel
Quantity: Sold as a kit
