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The Mark IV big block was the culmination of Chevrolet's performance engine development. Introduced in 1966 as a production engine option for full-sized Chevrolets, the highly versatile 427 cubic inch big block terrorized local drag strips and gave high performance engines a new standard. The success was short lived due to fuel shortages and emission standards. But fear not! The horsepower happy big block lives on and Speedway Motors is your source for performance parts and accessories for your 427 Chevy engine.

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396, 402, 427, 454, 496, 502, Raw, Steel, Natural

Ships Free
On Sale

Header Tube Type: Fenderwell

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View

Universal Fit, Block Hugger Header Tube Type, Raw

Ships Free
On Sale

Header Tube Type: Block Hugger

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 1-3/4"

Quick View

396, 402, 427, 454, 496, 502, Ceramic Coated, Steel

Ships Free
Video Available

Header Tube Type: Fenderwell

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View

Universal Fit, Roadster Header Tube Type, Raw, Steel

Ships Free

Header Tube Type: Roadster

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 1-7/8"

Quick View

396, 402, 427, 454, 496, 502, Raw, Steel, Natural

Ships Free
On Sale

Header Tube Type: Full-length

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View

Universal Fit, Roadster Header Tube Type, Raw, Steel

Ships Free

Header Tube Type: Roadster

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View

Universal Fit, Block Hugger Header Tube Type, Steel

Ships Free
Video Available

Header Tube Type: Block Hugger

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 1-3/4"

Quick View

396, 402, 427, 454, 496, 502, 572, Ceramic Coated

Ships Free
Video Available

Header Tube Type: Full-length

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View

Universal Fit, Roadster Header Tube Type, Steel, Silver

Ships Free
On Sale
Video Available

Header Tube Type: Roadster

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 1-7/8"

Quick View

Universal Fit, Lake Style Header Tube Type, Raw, Steel

Ships Free

Header Tube Type: Lake Style

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 1-7/8"

Quick View

366, 396, 402, 427, 454, Fenderwell Header Tube Type

Ships Free
On Sale

Header Tube Type: Fenderwell

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View

396, 402, 427, 454, Full-length Header Tube Type, Steel

Ships Free

Header Tube Type: Full-length

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View

396, 402, 427, 454, Full-length Header Tube Type, Raw

Ships Free
On Sale

Header Tube Type: Full-length

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View
$294.99
$388.66

396, 402, 427, 454, Roadster Header Tube Type, Raw

Ships Free
On Sale

Header Tube Type: Roadster

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 1-7/8"

Quick View
$799.99
$910.99

396, 402, 427, 454, 496, 502, 572, Ceramic Coated

Ships Free
On Sale

Header Tube Type: Dragster

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 2-3/8 to 2-1/2"

Quick View
$593.99
$782.62

396, 402, 427, 454, Roadster Header Tube Type, Steel

Ships Free
On Sale

Header Tube Type: Roadster

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 1-7/8"

Quick View

396, 402, 427, 454, 496, 502, Ceramic Coated, Steel

Ships Free

Header Tube Type: Full-length

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View
$799.99
$910.99

396, 402, 427, 454, 496, 502, 572, Ceramic Coated

Ships Free
On Sale

Header Tube Type: Dragster

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 2-1/4 to 2-3/8"

Quick View
$190.99
$255.08

396, 402, 427, 454, Full-length Header Tube Type, Raw

Ships Free
On Sale

Header Tube Type: Full-length

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View
$545.99
$752.41

366, 396, 402, 427, 454, Fenderwell Header Tube Type

Ships Free
On Sale

Header Tube Type: Fenderwell

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View
$763.99
$1,053.05

396, 402, 427, 454, 400, Full-length Header Tube Type

Ships Free
On Sale

Header Tube Type: Full-length

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 1-7/8"

Quick View
$662.99
$913.37

396, 402, 427, 454, 400, Full-length Header Tube Type

Ships Free
On Sale

Header Tube Type: Full-length

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View
$814.99
$1,203.16

396, 402, 427, 454, Full-length Header Tube Type, Steel

Ships Free
On Sale

Header Tube Type: Full-length

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View

396, 402, 427, 454, 496, 502, Ceramic Coated, Steel

Ships Free

Header Tube Type: Full-length

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 2-1/8"

Quick View

396, 402, 427, 454, Full-length Header Tube Type, Raw

Ships Free

Header Tube Type: Full-length

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 2-1/8"

Quick View
$564.99
$778.15

396, 402, 427, 454, 400, 409, Ceramic Coated, Steel

Ships Free
On Sale

Header Tube Type: Full-length

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 2"

Quick View

396, 402, 427, 454, Full-length Header Tube Type, Steel

Ships Free

Header Tube Type: Full-length

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 1-7/8"

Quick View

396, 402, 427, 454, 496, 502, Ceramic Coated, Steel

Ships Free

Header Tube Type: Full-length

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 2-1/8"

Quick View
$206.99
$273.11

396, 402, 427, 454, Block Hugger Header Tube Type, Raw

Ships Free
On Sale

Header Tube Type: Block Hugger

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 1-3/4"

Quick View

Universal Fit, Block Hugger Header Tube Type, Raw

Ships Free

Header Tube Type: Block Hugger

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 1-3/4"

Quick View
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