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The iconic W-Series big block engines from General Motors could always be spotted by the uniquely shaped heads and rocker covers for a distinctive appearance. Three different variations of the W-Series engines existed with the 348, 409, and 427 big block. The first introduced of the three was the “Turbo-Thrust” 348, intended for use in trucks and large passenger cars such as the Impala SS. Today, the 348 is still a highly sought after engine for restorers, rodders, and racers of all types. The folks here at Speedway Motors know what it takes to bring that old school big block back to life and you can be sure to find what you’re looking for with only the top brands and parts you need for your classic W-Series big block Chevy.

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$4,364.99
$4,399.99

Many Engines, TKO, 5-Speed Transmission Speeds

Ships Free
On Sale

Transmission Speeds: 5-Speed

Torque: 600 ft./lbs.

Input Shaft Spline Count: 26

Output Shaft Spline Count: 31

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$1,586.95
$1,791.95

348, 409, Dual Plane | High Rise Intake Manifold Type

Ships Free
On Sale

Intake Manifold Type: Dual Plane | High Rise

Carburetor Quantity: Two

Carburetor Barrels: 4-Barrel

Carburetor Flange Type: 4-Barrel Square Bore

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$1,396.50
$1,489.95

348, 409, Assembled Cylinder Head Style, Aluminum

Ships Free
On Sale

Cylinder Head Style: Assembled

Material Type: Aluminum

Finish: Natural

Intake Runner Volume: 220cc

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348, 409, Assembled Cylinder Head Style, Aluminum

Ships Free
On Sale
Video Available

Cylinder Head Style: Assembled

Material Type: Aluminum

Finish: Natural

Combustion Chamber Volume: 90cc

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Many Engines, Many Manual Transmissions, Steel, Black

Ships Free

Overall Height: 6.29"

Material Type: Steel

Finish: Black

SFI Rating: 6.1

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$902.99
$1,261.36

348, 409, Tri-Y Header Tube Type, Ceramic Coated, Steel

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On Sale

Header Tube Type: Tri-Y

Finish: Ceramic Coated

Flange Style: Standard

Primary Tube Diameter: 1-3/4"

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Many Engines, 6.29" Overall Height, Steel, Semi-gloss

Ships Free

Overall Height: 6.29"

Material Type: Steel

Finish: Semi-gloss

SFI Rating: 6.1

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Many Engines, Powerglide, 6.70" Overall Height, Steel

Ships Free

Overall Height: 6.70"

Material Type: Steel

Finish: Black

SFI Rating: 30.1

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$703.99
$970.42

348, 409, Tri-Y Header Tube Type, Raw, Steel, Natural

Ships Free
On Sale

Header Tube Type: Tri-Y

Finish: Raw

Flange Style: Standard

Primary Tube Diameter: 1-3/4"

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348, 409, Aluminum, Polished, Hardware Included

Ships Free
Video Available

Material Type: Aluminum

Finish: Polished

Hardware Included: Yes

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348, 409, Carbureted Fuel System Type, Aluminum

Ships Free

Fuel System Type: Carbureted

Intake Manifold Type: Dual Quad

Carburetor Quantity: Two

Carburetor Flange Type: 4-Barrel Square Bore

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Many Engines, One Wire Alternator, Chrome plated

Ships Free

One Wire Alternator: Yes

Alternator Case Style: Generator-Look

Alternator Amperage: 90 amp

Voltage Required: 12-Volt

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Many Engines, One Wire Alternator, Chrome plated

Ships Free

One Wire Alternator: Yes

Alternator Case Style: Generator-Look

Alternator Amperage: 60 amp

Voltage Required: 6-Volt, Positive Ground

Quick View

Many Engines, One Wire Alternator, Chrome plated

Ships Free

One Wire Alternator: Yes

Alternator Case Style: Generator-Look

Alternator Amperage: 60 amp

Voltage Required: 6-Volt, Negative Ground

Quick View

Many Engines, One Wire Alternator, Chrome plated

Ships Free

One Wire Alternator: Yes

Alternator Case Style: Generator-Look

Alternator Amperage: 90 amp

Voltage Required: 12-Volt

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348, 409

Ships Free
Video Available

Overall Height: 3.81"

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348, 409, HEI / Male Cap Type, Magnetic Trigger Style

Ships Free
Video Available

External Ignition Box Required: No

Cap Type: HEI / Male

Cap Terminal Style: HEI / Male

Advance Type: Mechanical and Vacuum

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Many Engines, One Wire Alternator, Polished

Ships Free

One Wire Alternator: Yes

Alternator Case Style: Generator-Look

Alternator Amperage: 90 amp

Voltage Required: 12-Volt

Quick View

Many Engines, One Wire Alternator, Polished

Ships Free

One Wire Alternator: Yes

Alternator Case Style: Generator-Look

Alternator Amperage: 90 amp

Voltage Required: 12-Volt

Quick View

348, 409, Carbureted Fuel System Type, Aluminum

Ships Free

Fuel System Type: Carbureted

Intake Manifold Type: Dual Plane

Carburetor Quantity: One

Carburetor Flange Type: 4-Barrel Square Bore

Quick View

Many Engines, One Wire Alternator, Polished

Ships Free

One Wire Alternator: Yes

Alternator Case Style: Generator-Look

Alternator Amperage: 60 amp

Voltage Required: 6-Volt, Negative Ground

Quick View

Many Engines, One Wire Alternator, Polished

Ships Free

One Wire Alternator: Yes

Alternator Case Style: Generator-Look

Alternator Amperage: 60 amp

Voltage Required: 6-Volt, Positive Ground

Quick View

Many Engines, One Wire Alternator, Polished

Ships Free

One Wire Alternator: Yes

Alternator Case Style: Generator-Look

Alternator Amperage: 90 amp

Voltage Required: 12-Volt

Quick View

348, 409, Carbureted Fuel System Type, Aluminum

Ships Free

Fuel System Type: Carbureted

Intake Manifold Type: Dual Plane

Carburetor Quantity: One

Carburetor Flange Type: 4-Barrel Square Bore

Quick View

Many Engines, One Wire Alternator, Black powdercoated

Ships Free

One Wire Alternator: Yes

Alternator Case Style: Generator-Look

Alternator Amperage: 60 amp

Voltage Required: 6-Volt, Positive Ground

Quick View

Many Engines, One Wire Alternator, Black powdercoated

Ships Free

One Wire Alternator: Yes

Alternator Case Style: Generator-Look

Alternator Amperage: 60 amp

Voltage Required: 6-Volt, Negative Ground

Quick View

Many Engines, V-Belt Belt Type, Black powdercoated

Ships Free

One Wire Alternator: No

Belt Type: V-Belt

Alternator Case Style: Generator-Look

Alternator Amperage: 60 amp

Quick View

348, 409, Aluminum, Polished

Ships Free
Video Available

Material Type: Aluminum

Finish: Polished

Quick View

Many Engines, HEI / Male Cap Type, Iron Gear Material

Ships Free

External Ignition Box Required: No

Cap Type: HEI / Male

Cap Terminal Style: HEI / Male

Advance Type: Mechanical and Vacuum

Quick View

348, 409, Aluminum

Ships Free
Video Available

Material Type: Aluminum

Quick View
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