1999 Pontiac Firebird Valve Cover and Cylinder Heads

Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

This replacement valve cover matches the fit and function of the original equipment part that may be damaged or warped. Made from quality materials for excellent fit and superior heat resistance, this valve cover has undergone extensive testing.

“Holley’s new 2-Piece LS valve covers are a great way to update the look of your LS engine without the use of complicated adapter systems or the hassle of remote coil relocation. These modular LS valve covers feature an OE height, internally baffled LS valve cover base with integrated coil mounts for popular Gen I and Gen V style LS coil bodies (coils not included), and a vintage style finned overcover that hides the unsightly LS coils and messy wiring harness – allowing the full performance benefits of coil-on-cover ignition setups without the robotic styling. Each modular coil cover features a simplified version of our Vintage Series style fins that seamlessly blends with other finned Holley dress-up accessories such as our LS valley covers and 14″” round air cleaners. The coil cover also features cast-in provisions for the spark plug boots and coil wiring harness so no extensions or custom wiring is required.”

“Holley’s new 2-Piece LS valve covers are a great way to update the look of your LS engine without the use of complicated adapter systems or the hassle of remote coil relocation. These modular LS valve covers feature an OE height, internally baffled LS valve cover base with integrated coil mounts for popular Gen I and Gen V style LS coil bodies (coils not included), and a “”Chevrolet”” branded overcover that hides the unsightly LS coils and messy wiring harness – allowing the full performance benefits of coil-on-cover ignition setups without the robotic styling. Each modular coil cover features a prominent vintage “”Chevrolet”” logo that matches various other GM licensed Holley products. The coil cover also features cast-in provisions for the spark plug boots and coil wiring harness so no extensions or custom wiring is required.”

Each 2-Piece LS valve cover set includes a low-profile billet oil fill cap, hardware and spacers for mounting both versions of LS coil bodies, and 12-point dress up hardware and rubber grommets for the coil covers. These modular LS valve covers will be offered in 5 unique finishes: natural cast, polished, satin black, factory orange, and gloss red (black, factory orange and gloss red sets feature machined fins). Polished and black versions coming soon.

“Holley’s new 2-Piece LS valve covers are a great way to update the look of your LS engine without the use of complicated adapter systems or the hassle of remote coil relocation. These modular LS valve covers feature an OE height, internally baffled LS valve cover base with integrated coil mounts for popular Gen I and Gen V style LS coil bodies (coils not included), and a “”Chevrolet”” branded overcover that hides the unsightly LS coils and messy wiring harness – allowing the full performance benefits of coil-on-cover ignition setups without the robotic styling. Each modular coil cover features a prominent vintage “”Chevrolet”” logo that matches various other GM licensed Holley products. The coil cover also features cast-in provisions for the spark plug boots and coil wiring harness so no extensions or custom wiring is required.”

“Holley’s new 2-Piece LS valve covers are a great way to update the look of your LS engine without the use of complicated adapter systems or the hassle of remote coil relocation. These modular LS valve covers feature an OE height, internally baffled LS valve cover base with integrated coil mounts for popular Gen I and Gen V style LS coil bodies (coils not included), and a vintage style finned overcover that hides the unsightly LS coils and messy wiring harness – allowing the full performance benefits of coil-on-cover ignition setups without the robotic styling. Each modular coil cover features a simplified version of our Vintage Series style fins that seamlessly blends with other finned Holley dress-up accessories such as our LS valley covers and 14″” round air cleaners. The coil cover also features cast-in provisions for the spark plug boots and coil wiring harness so no extensions or custom wiring is required.”

“Holley’s new 2-Piece LS valve covers are a great way to update the look of your LS engine without the use of complicated adapter systems or the hassle of remote coil relocation. These modular LS valve covers feature an OE height, internally baffled LS valve cover base with integrated coil mounts for popular Gen I and Gen V style LS coil bodies (coils not included), and a vintage finned overcover that hides the unsightly LS coils and messy wiring harness – allowing the full performance benefits of coil-on-cover ignition setups without the robotic styling. Each modular coil cover features our Vintage Series style fins with a script Holley logo that seamlessly blends with other finned Holley dress-up accessories such as our LS valley covers and 14″” round air cleaners. The coil cover also features cast-in provisions for the spark plug boots and coil wiring harness so no extensions or custom wiring is required.”

Each 2-Piece LS valve cover set includes a low-profile billet oil fill cap, hardware and spacers for mounting both versions of LS coil bodies, and 12-point dress up hardware and rubber grommets for the coil covers. These modular LS valve covers are available in 5 unique finishes: natural cast, polished, satin black, factory orange, and gloss red (black, factory orange and gloss red sets feature machined fins).

“Holley’s new 2-Piece LS valve covers are a great way to update the look of your LS engine without the use of complicated adapter systems or the hassle of remote coil relocation. These modular LS valve covers feature an OE height, internally baffled LS valve cover base with integrated coil mounts for popular Gen I and Gen V style LS coil bodies (coils not included), and a “”Chevrolet”” branded overcover that hides the unsightly LS coils and messy wiring harness – allowing the full performance benefits of coil-on-cover ignition setups without the robotic styling. Each modular coil cover features a prominent vintage “”Chevrolet”” logo that matches various other GM licensed Holley products. The coil cover also features cast-in provisions for the spark plug boots and coil wiring harness so no extensions or custom wiring is required.”

Each 2-Piece LS valve cover set includes a low-profile billet oil fill cap, hardware and spacers for mounting both versions of LS coil bodies, and 12-point dress up hardware and rubber grommets for the coil covers. These modular LS valve covers will be offered in 5 unique finishes: natural cast, polished, satin black, factory orange, and gloss red (black, factory orange and gloss red sets feature machined fins). Polished and black versions coming soon.

“Holley’s new 2-Piece LS valve covers are a great way to update the look of your LS engine without the use of complicated adapter systems or the hassle of remote coil relocation. These modular LS valve covers feature an OE height, internally baffled LS valve cover base with integrated coil mounts for popular Gen I and Gen V style LS coil bodies (coils not included), and a vintage style finned overcover that hides the unsightly LS coils and messy wiring harness – allowing the full performance benefits of coil-on-cover ignition setups without the robotic styling. Each modular coil cover features a simplified version of our Vintage Series style fins that seamlessly blends with other finned Holley dress-up accessories such as our LS valley covers and 14″” round air cleaners. The coil cover also features cast-in provisions for the spark plug boots and coil wiring harness so no extensions or custom wiring is required.”

“Holley’s cast aluminum valve covers for GM LS engines provide a fresh, refined look without the need to relocate the coils. There’s no question the factory “”coil on cover”” design gives the LS that signature high-tech look, but the factory brackets and coil location leave room for improvement. Clean up that signature look with Holley’s LS Valve Covers! They incorporate a radiused shape, angled coil mounting, and a billet fill cap. Plus, the coils mount directly to the cover with no need for a bracket in-between. They fit most popular LS series engines and come in Black Krinkle, Satin, Natural Cast, and Polished. Or, paint to match your vehicle’s theme!”

Based on our existing tall LS valve covers, the GM Licensed Tall LS valve covers eliminate the factory coil-on-cover look and instead feature prominent, cast-in graphics that are sure to dress up your engine bay and represent your loyalty to your favorite OEM brand.

The new GM Licensed Tall LS valve covers are available in five unique finishes to best fit your style: natural cast, polished, satin black, factory orange, and gloss red (all finishes have a precision machined logo surface aside from the polished version).

Let’s face it, nobody wants an ugly set of ignition coils sitting atop their newly dressed up engine. You can take the time and effort to relocate them or you get a set of TSP’s two-piece valve covers. The base has a tall internal height to allow for added valvetrain clearance and features provisions for mounting two of the most popular LS coil packs – no brackets required. It also features a baffled stock-style ventilation set-up. The coil cover features cut-outs for routing the wiring harness and spark plug wires and comes with a smooth top.

Let’s face it, nobody wants an ugly set of ignition coils sitting atop their newly dressed up engine. You can take the time and effort to relocate them or you get a set of TSP’s two,piece valve covers. The base has a tall internal height to allow for added valvetrain clearance and features provisions for mounting two of the most popular LS coil packs , no brackets required. It also features a baffled stock,style ventilation set,up. The coil cover features cut,outs for routing the wiring harness and spark plug wires and comes with a classic, finned top.

“These valve covers feature an additional 0.54″” of internal clearance over factory height LS valve covers, allowing for additional valve train clearance and adding a subtle muscular touch. The GM Licensed Tall LS valve covers were designed to fit LS1, LS2, LS3, LS6 and LS7 engines. These valve covers come ready for installation with an OE style baffle and ventilation system, lengthened factory style mounting hardware, and a billet aluminum oil fill cap.”

“These valve covers feature an additional 0.54″” of internal clearance over factory height LS valve covers, allowing for additional valve train clearance and adding a subtle muscular touch. The GM Licensed Tall LS valve covers were designed to fit LS1, LS2, LS3, LS6 and LS7 engines. These valve covers come ready for installation with an OE style baffle and ventilation system, lengthened factory style mounting hardware, and a billet aluminum oil fill cap.”

“These valve covers feature an additional 0.54″” of internal clearance over factory height LS valve covers, allowing for additional valve train clearance and adding a subtle muscular touch. The GM Licensed Tall LS valve covers were designed to fit LS1, LS2, LS3, LS6 and LS7 engines. These valve covers come ready for installation with an OE style baffle and ventilation system, lengthened factory style mounting hardware, and a billet aluminum oil fill cap.”

Let’s face it, nobody wants an ugly set of ignition coils sitting atop their newly dressed up engine. You can take the time and effort to relocate them or you get a set of TSP’s two-piece valve covers. The base has a tall internal height to allow for added valvetrain clearance and features provisions for mounting two of the most popular LS coil packs – no brackets required. It also features a baffled stock-style ventilation set-up. The coil cover features cut-outs for routing the wiring harness and spark plug wires and comes with a smooth top.

“The Holley Vintage Series LS valve covers were engineered to fit LS1, LS2, LS3, LS6 and LS7 engines and will clear up to a .750″” lift cam with stock style rocker arms. Manufactured from die cast aluminum for a high quality finish, these valve covers includes an integrated OE style baffle and ventilation system, and a billet aluminum oil fill cap. Customers are encouraged to reuse the factory valve cover bolt assemblies or replace them with an LS valve cover bolt assembly (bolt and grommet) that better fits the style of their build. The OE valve cover gaskets are reusable, though they may need to be replaced over time – please check them carefully before installation to determine if a replacement is necessary.”

“Holley’s tall LS valve covers are the latest addition to our extensive line of LS engine components that will add a custom touch to your engine bay and help you to stand out from the crowd. These valve covers were designed to add an additional 0.54″” of internal clearance over factory height valve covers. These valve covers retain Holley’s signature integrated angled coil mounts, and the hi-tech look and performance of coil-on-cover applications. The Holley tall LS valve covers fit LS1, LS2, LS3, LS6 and LS7 engines using coils with a standard LS3 bolt spacing of 72mm (coils not included). These valve covers come ready for installation with an OE style baffle and ventilation system, lengthened factory style mounting hardware, plus a billet aluminum oil fill cap.”

Let’s face it, nobody wants an ugly set of ignition coils sitting atop their newly dressed up engine. You can take the time and effort to relocate them or you get a set of TSP’s two-piece valve covers. The base has a tall internal height to allow for added valvetrain clearance and features provisions for mounting two of the most popular LS coil packs – no brackets required. It also features a baffled stock-style ventilation set-up. The coil cover features cut-outs for routing the wiring harness and spark plug wires and comes with a smooth top.

“Holley’s tall LS valve covers are the latest addition to our extensive line of LS engine components that will add a custom touch to your engine bay and help you to stand out from the crowd. These valve covers were designed to add an additional 0.54″” of internal clearance over factory height valve covers. The valve covers retain Holley’s signature integrated angled coil mounts, and the hi-tech look and performance of coil-on-cover applications. The Holley tall LS valve covers fit LS1, LS2, LS3, LS6 and LS7 engines using coils with a standard LS3 bolt spacing of 72mm. These valve covers come ready for installation with an OE style baffle and ventilation system, lengthened factory style mounting hardware, plus a billet aluminum oil fill cap.”

“Holley’s tall LS valve covers are the latest addition to our extensive line of LS engine components that will add a custom touch to your engine bay and help you to stand out from the crowd. These valve covers were designed to add an additional 0.54″” of internal clearance over factory height valve covers. The valve covers retain Holley’s signature integrated angled coil mounts, and the hi-tech look and performance of coil-on-cover applications. The Holley tall LS valve covers fit LS1, LS2, LS3, LS6 and LS7 engines using coils with a standard LS3 bolt spacing of 72mm (coils not included). These valve covers come ready for installation with an OE style baffle and ventilation system, lengthened factory style mounting hardware, plus a billet aluminum oil fill cap.”

“Holley’s cast aluminum valve covers for GM LS engines provide a fresh, refined look without the need to relocate the coils. There’s no question the factory “”coil on cover”” design gives the LS that signature high-tech look, but the factory brackets and coil location leave room for improvement. Clean up that signature look with Holley’s LS Valve Covers! They incorporate a radiused shape, angled coil mounting, and a billet fill cap. Plus, the coils mount directly to the cover with no need for a bracket in-between. They fit most popular LS series engines and come in Black Textured, Satin, Natural Cast, and Polished. Or, paint to match your vehicle’s theme!”

These adapter plates feature an integrated oil fill and are pre-threaded for PCV ventilation fittings. Simply install the LS valve cover adapter plate onto your GM LS1, LS2, LS3, LS6, or LS7 engine to serve as your true valve cover, install the coil packs on top and route the wiring harness and spark plug wires into their designated locations, and use a perimeter bolt SBC valve cover of your choice to hide the unsightly coils without the need for any coil relocation and retention of all the benefits of OE style coil-on-plug mounting.

“Holley’s cast aluminum valve covers for GM LS engines provide a fresh, refined look without the need to relocate the coils. There’s no question the factory “”coil on cover”” design gives the LS that signature high-tech look, but the factory brackets and coil location leave room for improvement. Clean up that signature look with Holley’s LS Valve Covers! They incorporate a radiused shape, angled coil mounting, and a billet fill cap. Plus, the coils mount directly to the cover with no need for a bracket in-between. They fit most popular LS series engines and come in Black Krinkle, Satin, Natural Cast, and Polished. Or, paint to match your vehicle’s theme!”

Holley’s new cast aluminum LS valve cover adapter plates offer an innovative way to add the vintage styling cues of a 1958-1986 Small Block Chevy perimeter bolt valve cover to your modern GM LS engine.

“Holley’s tall LS valve covers are the latest addition to our extensive line of LS engine components that will add a custom touch to your engine bay and help you to stand out from the crowd. These valve covers were designed to add an additional 0.54″” of internal clearance over factory height valve covers. The valve covers retain Holley’s signature integrated angled coil mounts, and the hi-tech look and performance of coil-on-cover applications. The Holley tall LS valve covers fit LS1, LS2, LS3, LS6 and LS7 engines using coils with a standard LS3 bolt spacing of 72mm (coils not included). These valve covers come ready for installation with an OE style baffle and ventilation system, lengthened factory style mounting hardware, plus a billet aluminum oil fill cap.”

These adapter plates feature an integrated oil fill and are pre-threaded for PCV ventilation fittings. Simply install the LS valve cover adapter plate onto your GM LS1, LS2, LS3, LS6, or LS7 engine to serve as your true valve cover, install the coil packs on top and route the wiring harness and spark plug wires into their designated locations, and use a perimeter bolt SBC valve cover of your choice to hide the unsightly coils without the need for any coil relocation and retention of all the benefits of OE style coil-on-plug mounting.

“Holley is pleased to release its latest line of fully licensed products, the GM Track Series Fabricated Aluminum Valve Covers. The GM Track Series family of valve covers gives you an excellent way to add a high-end fabricated look combined with a lightweight and tough valve cover for your favorite Chevy engine. These valve covers are constructed of 6061 T5 sheet aluminum, feature a laser etched “”Chevrolet”” and Bow Tie logo, and precision TIG welded for a proper fit. They are available in silver anodized or black coated finishes along with various heights to clear most popular rocker arm combinations. All of our valve covers include mounting hardware for quick and simple installation.”

“Holley’s tall LS valve covers are the latest addition to our extensive line of LS engine components that will add a custom touch to your engine bay and help you to stand out from the crowd. These valve covers were designed to add an additional 0.54″” of internal clearance over factory height valve covers. The valve covers retain Holley’s signature integrated angled coil mounts, and the hi-tech look and performance of coil-on-cover applications. The Holley tall LS valve covers fit LS1, LS2, LS3, LS6 and LS7 engines using coils with a standard LS3 bolt spacing of 72mm (coils not included). These valve covers come ready for installation with an OE style baffle and ventilation system, lengthened factory style mounting hardware, plus a billet aluminum oil fill cap.”

TSP’s tall, cast aluminum valve covers are a great way to improve the look of your LS engine, without any radical changes to its configuration. The cover has an increased height to allow for added valvetrain clearance and features studs for mounting LS coils with 72mm bolt spacing. It also features a baffled stock-style ventilation set-up and finish-matched oil fill cap.

TSP’s tall, cast aluminum valve covers are a great way to improve the look of your LS engine, without any radical changes to its configuration. The cover has an increased height to allow for added valvetrain clearance and features studs for mounting LS coils with 72mm bolt spacing. It also features a baffled stock-style ventilation set-up and finish-matched oil fill cap.

This replacement valve cover matches the fit and function of the original equipment part that may be damaged or warped. Made from quality materials for excellent fit and superior heat resistance, this valve cover has undergone extensive testing.

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

For secure, lasting macro and micro sealing, and protection against fuel, oil, water, and anti-freeze, Victor Reinz cylinder head gaskets deliver optimal service. Victor Reinz gaskets deliver OE proven strength and resistance to extreme temperatures and high-combustion pressures, and Victor Reinz engineers choose the most effective materials and designs from the global resources of Dana Incorporated.

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

“Edelbrock part No: 7388 head gasket is intended for Gen III 5.7L LS1 engines. This gasket comes as a set and has a 3.920″” bore size and a .051″” compressed thickness.”

For secure, lasting macro and micro sealing, and protection against fuel, oil, water, and anti-freeze, Victor Reinz cylinder head gaskets deliver optimal service. Victor Reinz gaskets deliver OE proven strength and resistance to extreme temperatures and high-combustion pressures, and Victor Reinz engineers choose the most effective materials and designs from the global resources of Dana Incorporated.

For secure, lasting macro and micro sealing, and protection against fuel, oil, water, and anti-freeze, Victor Reinz cylinder head gaskets deliver optimal service. Victor Reinz gaskets deliver OE proven strength and resistance to extreme temperatures and high-combustion pressures, and Victor Reinz engineers choose the most effective materials and designs from the global resources of Dana Incorporated.

Sealed Power parts provide innovative designs, use leading-edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.

GM Genuine Parts Engine Valve Lifter Guide are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Encore Automotive Valve Lifter is a steel cylinder designed to maintain zero valve clearance in a combustion engine.