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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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$1,666.95
$1,791.95

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

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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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$1,466.50
$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
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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348, 409

Ships Free
Video Available

Overall Height: 3.81"

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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, Negative Ground

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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

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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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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

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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

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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

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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: 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

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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

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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

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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

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348, 409, Aluminum, Polished

Ships Free
Video Available

Material Type: Aluminum

Finish: Polished

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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

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$419.95
$479.94

348, 409, Full Roller Rocker Arm Style, Chromoly, Black

Ships Free
On Sale

Rocker Arm Style: Full Roller

Rocker Arm Ratio: 1.7

Stud Size: 0.375"

Rocker Arm Nut Style: Polylock

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348, 409, Aluminum

Ships Free
Video Available

Material Type: Aluminum

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Many Engines, Early Ford

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On Sale
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Many Engines, 168 Tooth Count, 1.1 SFI Rating

Ships Free

Tooth Count: 168

SFI Rating: 1.1

Weight: 25 lbs.

Engine Balance: Internal

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Many Engines, 168 Tooth Count, 1.1 SFI Rating

Ships Free

Tooth Count: 168

SFI Rating: 1.1

Weight: 30 lbs.

Engine Balance: Internal

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Many Engines, 153 Tooth Count, 1.1 SFI Rating

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Tooth Count: 153

SFI Rating: 1.1

Weight: 30 lbs.

Engine Balance: Internal

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$356.99
$625.09

348, 409, HEI / Male Cap Type, Mechanical Advance Type

Ships Free
On Sale

External Ignition Box Required: No

Cap Type: HEI / Male

Cap Terminal Style: HEI / Male

Advance Type: Mechanical

Quick View
$356.99
$625.09

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

Ships Free
On Sale

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, Automatic and Manual Transmission Type

Ships Free

Transmission Type: Automatic and Manual

Starter Size: Mini

Starter Output (kW/hp): 1.4 kW / 1.8 hp

Starter Output (ft. lbs.): 200 ft.-lbs. torque

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$349.99
$612.55

348, 409, Socket / Female Cap Type, Steel Gear Material

Ships Free
On Sale

External Ignition Box Required: No

Cap Type: Socket / Female

Cap Terminal Style: Socket / Female

Advance Type: Mechanical and Vacuum

Quick View

348, 409, Stock Valve Cover Height, Cast Aluminum

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Valve Cover Height: Stock

Valve Cover Mounting Style: Perimeter Bolt

Valve Cover Top Style: Edelbrock Logo

Material Type: Cast Aluminum

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$326.99
$571.62

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

Ships Free
On Sale

External Ignition Box Required: No

Cap Type: HEI / Male

Cap Terminal Style: HEI / Male

Advance Type: Mechanical and Vacuum

Quick View
$319.99
$559.46

348, 409, Socket / Female Cap Type, Steel Gear Material

Ships Free
On Sale

External Ignition Box Required: No

Cap Type: Socket / Female

Cap Terminal Style: Socket / Female

Advance Type: Mechanical and Vacuum

Quick View
$319.99
$559.46

348, 409, Socket / Female Cap Type, Steel Gear Material

Ships Free
On Sale

External Ignition Box Required: No

Cap Type: Socket / Female

Cap Terminal Style: Socket / Female

Advance Type: Mechanical and Vacuum

Quick View

348, 409, Steel, For Use with Guideplates, Heat Treated

Ships Free

Material Type: Steel

For Use with Guideplates: Yes

Overall Diameter: 3/8 in."

Top Tip Style: Ball

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348, 409, Aluminum, Natural

Ships Free

Material Type: Aluminum

Finish: Natural

Baffled: No

Gaskets Included: No

Quick View

Many Engines, One Wire Alternator, Black powdercoated

Ships Free

One Wire Alternator: Yes

Alternator Case Style: GM CS121

Alternator Amperage: 100 amp

Voltage Required: 12-Volt

Quick View
$261.99
$457.31

348, 409, External Ignition Box Required, Red, Polished

Ships Free
On Sale

External Ignition Box Required: Yes

Cap Type: HEI / Male

Cap Terminal Style: HEI / Male

Advance Type: Mechanical and Vacuum

Quick View
$261.99
$457.31

348, 409, External Ignition Box Required, Black

Ships Free
On Sale

External Ignition Box Required: Yes

Cap Type: HEI / Male

Cap Terminal Style: HEI / Male

Advance Type: Mechanical and Vacuum

Quick View

348, 409, Steel, For Use with Guideplates, Heat Treated

Ships Free

Material Type: Steel

For Use with Guideplates: Yes

Overall Diameter: 3/8 in."

Top Tip Style: Ball

Quick View

Many Engines, Mechanical/Solid Flat Tappet Lifter Type

Ships Free

Lifter Type: Mechanical/Solid Flat Tappet

Lifter Body Diameter: 0.842"

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$245.95
$281.19

348, 409, Hydraulic Flat Tappet Camshaft Type

Ships Free
On Sale
Video Available

Camshaft Type: Hydraulic Flat Tappet

RPM Range: 2200-6100

Intake Duration: 286

Exhaust Duration: 304

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348, 409, Mechanical Water Pump Type, Polished, Natural

Ships Free

Water Pump Type: Mechanical

Water Pump Style: Short

Housing Material: Aluminum

Housing Finish: Polished

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348, 409, Hex Wrench Type, Bolt Fastener Style, Black

Ships Free

Wrench Type: Hex

Fastener Style: Bolt

Material Type: Chromoly

Cut to Fit: No

Quick View

Many Engines, Hydraulic Flat Tappet Lifter Type

Ships Free

Lifter Type: Hydraulic Flat Tappet

Lifter Body Diameter: 0.842"

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Many Engines, One Wire Alternator, Polished

Ships Free

One Wire Alternator: Yes

Alternator Case Style: GM 12SI

Alternator Amperage: 150 amp

Voltage Required: 12-Volt

Quick View
$216.99
$289.99

283, 327, 396, 427, 348, 409

Ships Free
On Sale
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$216.99
$289.99

Many Engines, Chrome

Ships Free
On Sale

Power Steering Pump Finish: Chrome

Power Steering Pulley Included: No

Overall Length: 8.5"

Overall Width: 7"

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Many Engines, One Wire Alternator, Black powdercoated

Ships Free

One Wire Alternator: Yes

Alternator Case Style: GM 12SI

Alternator Amperage: 140 amp

Voltage Required: 12-Volt

Quick View

348, 409, Hydraulic Flat Tappet Camshaft Type

Ships Free
On Sale
Video Available

Camshaft Type: Hydraulic Flat Tappet

RPM Range: 2500-6400

Intake Duration: 294

Exhaust Duration: 312

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