• Top Street Performance Chevy Big Block Cork Valve Cover Gaskets - for street and performance builds
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Top Street Performance

Chevy Big Block Cork Valve Cover Gaskets

Chevy Big Block Cork Valve Cover Gaskets

SKU: SP6120

$16.95
$16.95 $18.65
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.

Product Details

Features

  • Cork construction seals Chevy big block valve cover mating surfaces
  • 1/8" thickness gasket material for consistent sealing under clamp load
  • Fits Chevy Big Block V8s across Gen II, V, and VI, 396–502 CID
  • Sold as a pair — complete gasket set for both valve covers

Description

The Chevy Big Block Cork Valve Cover Gaskets seal the mating surface between Chevy big block valve covers and the cylinder head to help prevent oil leaks. Cork construction at 1/8" thickness is built to match the Chevy big block gasket rail pattern shared across multiple generations of this engine family, so bolt pattern and sealing surface must match your specific application for proper installation.

This gasket set fits the Chevrolet Big Block V8 Gen II (Mark IV) — 6.5L/396, 6.6L/402, 7.0L/427, and 7.4L/454 CID — the Gen V — 7.4L/454 and 8.2L/502 CID — and the Gen VI — 7.4L/454 CID. Sold as a pair, covering both valve covers in a typical installation.

Verify bolt pattern, sealing surface, and gasket material before installation, and replace worn gaskets during valve cover service or a fresh installation.


Applications
Fits Chevrolet Big Block V8 Gen II/Mark IV (396, 402, 427, 454 CID), Gen V (454, 502 CID), and Gen VI (454 CID) — the same gasket rail pattern is shared across all three generations.

Gasket Specifications
Cork construction, 1/8" thickness, sold as a pair.

Specs

MaterialCork
Thickness1/8"
QuantitySold As A Pair

Engine Fitment

COMPATIBLE WITH
CHEVROLET BIG BLOCK V8 ENGINES
• 6.5L / 396 in³
• 6.6L / 402 in³
• 7.0L / 427 in³
• 7.4L / 454 in³
• 8.2L / 502 in³

NOTES
• Cork gasket, 1/8" thickness, sold as a pair.
• Verify gasket rail width and bolt hole spacing match your specific valve cover before ordering.

COMMON VEHICLE APPLICATIONS
Chevrolet Chevelle / Camaro / Corvette
Chevrolet C10 / C20 / truck applications
Chevrolet Impala / El Camino / Monte Carlo

Q&A

What does this gasket fit?
This gasket set fits Chevrolet Big Block V8 Gen II (Mark IV) engines, including 396, 402, 427, and 454 CID, Gen V engines including 454 and 502 CID, and Gen VI 454 CID applications.

Does one gasket really fit all these different big block generations?
Yes. Chevrolet Big Block Gen II (Mark IV), Gen V, and Gen VI engines share the same valve cover gasket rail pattern, allowing this gasket set to fit all of these engine families.

What is this gasket made from?
These gaskets are manufactured from 1/8-inch thick cork, providing a reliable seal between the valve cover and cylinder head.

How many gaskets come in this set?
This kit includes two valve cover gaskets, providing a complete set for both valve covers.

When should I replace this gasket?
Replace the gasket whenever servicing or removing the valve covers, or if the existing gasket shows signs of wear, cracking, compression, or oil leakage.

Does this gasket affect emissions compliance?
No. This product does not affect vehicle emissions and is not subject to emissions compliance regulations.

Emissions Notice

This product does not affect vehicle emissions and is not subject to emissions compliance regulations.