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Top Street Performance

Chevy Big Block Cylinder Head Dowel Pins

Chevy Big Block Cylinder Head Dowel Pins

SKU: JM4249

$5.50
$5.50 $6.25
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

  • Fits Chevy Big Block Mark IV applications including 396, 402, 427 and 454 engines
  • Precision dowel pins help align the cylinder head and block for proper gasket location
  • Ideal for cylinder head service, rebuilds and performance engine assembly
  • Sold as an application-specific kit; verify engine family and head style before installation

Description

Restore accurate cylinder head alignment on your Chevy Big Block engine with application-specific cylinder head dowel pins. Designed to properly locate the cylinder head on the block, these dowels help support gasket alignment, sealing consistency, and a cleaner engine assembly.

Accurate Head Location
Precision dowel pins help position the cylinder head correctly on the engine block, reducing alignment issues during assembly.

Supports Gasket Sealing
Proper cylinder head location helps keep the head gasket aligned with the block and combustion chambers for a more reliable seal.

Application-Specific Fit
Designed for the listed engine family to support correct installation during cylinder head service, rebuilds, or performance upgrades.

Ideal for Rebuilds & Repairs
Recommended when replacing damaged, missing, or worn dowel pins during engine assembly or cylinder head installation.

Specs

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 affect vehicle emissions and is not subject to emissions compliance regulations.