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The largest of the small blocks, the 400 debuted in 1970 and was produced for over 10 years. Featuring siamesed cylinders for added strength, with 4.125" bore and 3.75" stroke, the small block 400 was a torque monster. Speedway Motors carries a huge selection of high performance small block Chevy engine parts to help make your 400 motor really come to life.

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$6,659.00
$7,035.99

400, Long Block Crate Engine Type, 473 ft./lbs. Torque

Ships Flat Rate
On Sale

Crate Engine Type: Long Block

Engine Displacement: 400 cu. in.

Horsepower: 508 horsepower

Compression Ratio: 10.3:1

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400, 421, 400 mains Main Journal Style

Ships Free

Main Journal Style: 400 mains

Engine Stroke: 3.875"

Connecting Rod Type: H-Beam

Connecting Rod Length: 6.000"

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283, 305, 350, 400, HEI / Male Cap Terminal Style

Ships Free
On Sale
Video Available

External Ignition Box Required: No

Cap Terminal Style: HEI / Male

Advance Type: Mechanical and Vacuum

Trigger Style: Magnetic

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Ships Free
Video Available

Fuel System Type: Carbureted

Intake Manifold Type: Dual Plane

Carburetor Quantity: One

Carburetor Flange Type: 4-Barrel Square Bore

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302, 327, 350, 400, Gasket(s) Included

Ships Free

Gasket(s) Included: Yes

Cylinder Head Style: Assembled

Combustion Chamber Volume: 76cc

Intake Valve Diameter: 1.940"

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283, 305, 307, 327, 350, 377, 383, 400, Red

On Sale
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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302, 327, 350, 400, Gasket(s) Included

Ships Free

Gasket(s) Included: Yes

Cylinder Head Style: Assembled

Combustion Chamber Volume: 76cc

Intake Valve Diameter: 1.940"

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$86.99
$90.98

Universal Fit, V-Belt Belt Type, 1 Groove Count, Steel

On Sale

Belt Type: V-Belt

Groove Count: 1

Material Type: Steel

Finish: Black

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Universal Fit, Steel, Painted, Red

On Sale

Material Type: Steel

Finish: Painted

Color: Red

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262, 267, 305, 400, Wet Sump Sump Style, Steel

Ships Free

Sump Style: Wet Sump

Sump Location: Rear

Liquid Measurement: 7 quarts

Material Type: Steel

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$261.99
$275.42

262, 265, 267, 283, 305, 383, 400, Aluminum, Natural

Ships Free
On Sale

Fuel System Type: Carbureted

Intake Manifold Type: Dual Plane

Carburetor Quantity: One

Carburetor Flange Type: 4-Barrel Square Bore

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$161.99
$169.92

283, 305, 350, 400, -6 AN, Hoses Included

Ships Free
On Sale
Video Available

AN Size: -6 AN

Hoses Included: Yes

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302, 327, 350, 400, Gasket(s) Included

Ships Free

Gasket(s) Included: Yes

Cylinder Head Style: Assembled

Combustion Chamber Volume: 64cc

Intake Valve Diameter: 1.940"

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$165.99
$173.92

262, 265, 267, 283, 302, 305, 307, 327, 350, 400, -6 AN

Ships Free
On Sale
Video Available

AN Size: -6 AN

Hoses Included: Yes

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$110.99
$115.97

Universal Fit, Steel, Painted, Red

On Sale

Material Type: Steel

Finish: Painted

Color: Red

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$75.99
$78.97

Universal Fit, Steel, Painted, Red

On Sale

Material Type: Steel

Finish: Painted

Color: Red

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Universal Fit, 5-Speed Transmission Speeds

Ships Free

Transmission Speeds: 5-Speed

Torque: 600 ft./lbs.

Input Shaft Spline Count: 26

Output Shaft Spline Count: 31

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$5,644.99
$6,104.00

Universal Fit, 6-Speed Transmission Speeds

On Sale

Transmission Speeds: 6-Speed

Torque: 700 ft./lbs.

Input Shaft Spline Count: 26

Output Shaft Spline Count: 31

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$1,374.99
$1,487.00

302, 327, 350, 400, Gasket(s) Included

Ships Free
On Sale

Gasket(s) Included: Yes

Cylinder Head Style: Assembled

Combustion Chamber Volume: 76cc

Intake Valve Diameter: 1.940"

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$5,540.99
$5,991.00

Universal Fit, 6-Speed Transmission Speeds

On Sale

Transmission Speeds: 6-Speed

Torque: 700 ft./lbs.

Input Shaft Spline Count: 26

Output Shaft Spline Count: 31

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$720.99
$758.99

305, 327, 350, 383, 400, Long Water Pump Style, Chrome

Ships Free
On Sale

Water Pump Style: Long

Pulley Style: V-belt

Crankshaft Pulley Included: Yes

Crankshaft Pulley Material: Steel

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302, 327, 350, 400, Gasket(s) Included

Ships Free

Gasket(s) Included: Yes

Cylinder Head Style: Assembled

Combustion Chamber Volume: 76cc

Intake Valve Diameter: 1.940"

Quick View

302, 327, 350, 400, Gasket(s) Included

Ships Free

Gasket(s) Included: Yes

Cylinder Head Style: Assembled

Combustion Chamber Volume: 76cc

Intake Valve Diameter: 1.940"

Quick View

302, 327, 350, 400, Gasket(s) Included, Locks Included

Ships Free

Gasket(s) Included: Yes

Cylinder Head Style: Assembled

Combustion Chamber Volume: 64cc

Intake Valve Diameter: 1.940"

Quick View

302, 327, 350, 400, Gasket(s) Included

Ships Free

Gasket(s) Included: Yes

Cylinder Head Style: Assembled

Combustion Chamber Volume: 64cc

Intake Valve Diameter: 1.940"

Quick View

302, 327, 350, 400, Gasket(s) Included, Locks Included

Ships Free

Gasket(s) Included: Yes

Cylinder Head Style: Assembled

Combustion Chamber Volume: 76cc

Intake Valve Diameter: 1.940"

Quick View
$260.99
$273.78

262, 267, 305, 400, Wet Sump Sump Style, Steel, Zinc

Ships Free
On Sale

Sump Style: Wet Sump

Sump Location: Rear

Liquid Measurement: 7 quarts

Material Type: Steel

Quick View

302, 327, 350, 400, Gasket(s) Included

Ships Free

Gasket(s) Included: Yes

Cylinder Head Style: Assembled

Combustion Chamber Volume: 64cc

Intake Valve Diameter: 1.940"

Quick View

302, 327, 350, 400, Gasket(s) Included, Locks Included

Ships Free

Gasket(s) Included: Yes

Cylinder Head Style: Assembled

Combustion Chamber Volume: 76cc

Intake Valve Diameter: 1.940"

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Chevy Small Block V8, Gasoline Fuel Type, Aluminum

On Sale

Fuel Type: Gasoline

Free Flow Rate: 80 GPH / 303 LPH

Maximum Pressure: 6 psi

Fuel Pump Inlet Size: 1/4 in. NPT

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