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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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Universal Fit, 50 mm Inside Diameter

Inside Diameter: 50 mm

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Universal Fit, 50 mm Inside Diameter

Inside Diameter: 50 mm

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Chevy Small Block V8, Chevy Big Block V8

On Sale

Thread Pitch: 7/16"

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Chevy Small Block V8, Chevy Big Block V8

On Sale
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Chevy Small Block V8, Chevy Big Block V8

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396, 402, 427, 454, 1/4-20 x .75" Thread Pitch, Steel

Thread Pitch: 1/4-20 x .75"

Material Type: Steel

Finish: Black

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396, 402, 427, 454, 1/4-20 x .75" Thread Pitch, Steel

Thread Pitch: 1/4-20 x .75"

Material Type: Steel

Finish: Silver

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Chevy Small Block V8, Chevy Big Block V8

On Sale
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Chevy Small Block V8, Chevy Big Block V8

On Sale
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Many Engines

On Sale
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Chevy Small Block V8, Chevy Big Block V8

On Sale
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Chevy Small Block V8, Chevy Big Block V8

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396, 402, 427, 454, 1/4-20 x 3.37" Thread Pitch, Steel

Thread Pitch: 1/4-20 x 3.37"

Material Type: Steel

Finish: Silver

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396, 402, 427, 454, 1/4-20 x 3.37" Thread Pitch, Steel

Thread Pitch: 1/4-20 x 3.37"

Material Type: Steel

Finish: Black

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396, 402, 427, 454, Gasket(s) Included

On Sale

Gasket(s) Included: Yes

Hardware Included: Yes

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

Garage Sale
Clearance
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396, 402, 427, 454, 496, 1.9" Overall Length

On Sale

Overall Length: 1.9"

Thread Length: 0.75"

Thread Length (2): 0.75"

Finish: Black Oxide

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396, 402, 427, 454, 496, 502, 572, 260, 289, 302, 351W

Overall Diameter: 2.13"

Material Type: Aluminum

Material Thickness: 0.04"

Finish: Natural

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65-74 Chevy, 0.125" Tubing Diameter, Brass

Angle: Straight

Fitting End A: 1/8" Tube

Fitting End B: 1/8" NPT Male

Tubing Diameter: 0.125"

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Many Engines, 13/16-16 Thread Pitch

Thread Pitch: 13/16-16

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Many Engines, Hardware Included, Chromoly, Black Oxide

On Sale

Hardware Included: Yes

Material Type: Chromoly

Finish: Black Oxide

Color: Black

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396, 402, 427, 454, 1.88" Port Height, 1.81" Port Width

Port Height: 1.88"

Port Width: 1.81"

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Chevy Small Block V8, Chevy Big Block V8

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396, 402, 427, 454, 496, 502

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396, 402, 427, 454, .060" Overall Thickness

Video Available

Overall Thickness: .060"

Port Height: 1.90"

Port Width: 2.20"

Port Style: Oval

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Many Engines, 1.05" Overall Length, Hex Wrench Type

On Sale

Overall Length: 1.05"

Under Head Length: 0.75"

Thread Pitch: 3/8"-16

Wrench Type: Hex

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$8.95
$11.19

396, 402, 427, 454, Steel, Black Oxide, Black

On Sale

Material Type: Steel

Finish: Black Oxide

Guideplate Pushrod Size: 0.437"

Guide Plate Style: Raised

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$8.95
$11.19

Many Engines, Hydraulic Flat Tappet Lifter Type

On Sale

Lifter Type: Hydraulic Flat Tappet

Link Bar: None

Lifter Link Bars Included: No

Lifter Body Diameter: 0.842"

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396, 402, 427, 454, 496, 502, 572, 1.50" Overall Length

Overall Length: 1.50"

Material Type: Aluminum

Finish: Anodized

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Chevy Small Block V8, Chevy Big Block V8, Steel

Material Type: Steel

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283, 302, 307, 327, 350, 400, 396, 402, 427, 454

On Sale
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Chevy Small Block V8, Chevy Big Block V8

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$9.95
$12.44

Many Engines, Mechanical/Solid Flat Tappet Lifter Type

On Sale

Lifter Type: Mechanical/Solid Flat Tappet

Link Bar: None

Lifter Link Bars Included: No

Lifter Body Diameter: 0.842"

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$9.95
$12.44

Many Engines, Hydraulic Flat Tappet Lifter Type

On Sale

Lifter Type: Hydraulic Flat Tappet

Link Bar: None

Lifter Link Bars Included: No

Lifter Body Diameter: 0.842"

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

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Many Engines, 1.05" Overall Length, Hex Wrench Type

Overall Length: 1.05"

Under Head Length: 0.75"

Thread Pitch: 3/8"-16

Wrench Type: Hex

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Chevy Small Block V8, Chevy Big Block V8, Chromoly

On Sale

Bolt Length: 4.25"

Under Head Length: 3.75"

Wrench Type: Hex

Material Type: Chromoly

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Many Engines, 1" Under Head Length, Steel, Zinc

On Sale

Under Head Length: 1"

Thread Pitch: 3/8"-16

Material Type: Steel

Finish: Zinc

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Chevy Small Block V8, Chevy Big Block V8

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396, 402, 427, 454, Composite

Material Type: Composite

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$10.95
$13.69

Many Engines, Hydraulic Flat Tappet Lifter Type

On Sale

Lifter Type: Hydraulic Flat Tappet

Link Bar: None

Lifter Link Bars Included: No

Lifter Body Diameter: 0.842"

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327, 350, 383, 400, 396, 402, 427, 454, 1.57" Hose ID

Assembled Height: 2.25"

Base Height: .50"

Hose ID: 1.57"

Tube Length: 2.45"

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327, 350, 383, 400, 396, 402, 427, 454, 1.58" Hose ID

Assembled Height: 2.38"

Base Height: .48"

Hose ID: 1.58"

Tube Length: 2.66"

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396, 402, 427, 454, 496, 502, 9.25" Overall Length

Overall Length: 9.25"

Overall Diameter: .63"

Material Type: Steel

Finish: Black Oxide

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

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366, 396, 402, 427, 454, 496, Polished

Finish: Polished

Overall Thickness: 0.38"

Gasket(s) Included: No

Hardware Included: No

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Chevy Small Block V8, Chevy Big Block V8, Steel

Overall Length: 1.560"

Outside Diameter: .621"

Inside Diameter: .350"

Material Type: Steel

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Chevy Small Block V8, Chevy Big Block V8, 1.50" Hose ID

Assembled Height: 2.75"

Base Height: .37"

Hose ID: 1.50"

Angle: 50 degree

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Many Engines, 1.00" Under Head Length, Chromoly, Black

On Sale

Under Head Length: 1.00"

Thread Pitch: 7/16"-20

Wrench Type: 12 Point

Material Type: Chromoly

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Chevy Small Block V8, Chevy Big Block V8

On Sale

Overall Length: 2.42"

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396, 427, 454, 413, 426 Wedge, 440

Hardware Included: No

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$11.28
$19.27

Chevy Small Block V8, Chevy Big Block V8

On Sale

Cap Terminal Style: HEI / Male

Cap Type: HEI / Male

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$11.44
$14.62

Many Engines, 0.75" Under Head Length, Steel, Zinc

On Sale

Under Head Length: 0.75"

Thread Pitch: 3/8"-16

Material Type: Steel

Finish: Zinc

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Many Engines, 1/2"-20 Thread Pitch, Gasket(s) Included

Thread Pitch: 1/2"-20

Gasket(s) Included: Yes

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$11.95
$14.94

396, 402, 427, 454, Steel, Black Oxide, Black

On Sale

Material Type: Steel

Finish: Black Oxide

Guideplate Pushrod Size: 0.375"

Guide Plate Style: Raised

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$11.95
$11.99

Chevy Small Block V8, Chevy Big Block V8

On Sale

Thickness: 0.03"

Material Type: Steel

Rear Main Seal Style: 2-piece

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

On Sale
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396, 402, 427, 454, One-Piece Style, Steel, Black

Bolts/Studs Included: No

Style: One-Piece

Material Type: Steel

Color: Black

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65-00 Chevy, 70-00 GMC, 5/8" Hose End Size

Hose End Size: 5/8"

Thread Pitch: 3/4" NPT

Angle: Straight

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Many Engines, 1.12" Bolt Length, .75" Under Head Length

On Sale

Bolt Length: 1.12"

Under Head Length: .75"

Wrench Type: 12 Point

Material Type: Chromoly

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