1978 Chevy G20 Engine Parts

Crate Engine Type:

Long Block

Compression Ratio:

10.3:1

Engine Displacement:

400 cu. in.

Bore Size:

4.125"

Sold in Quantity:

Pair

Outside Diameter:

8"

Engine Balance:

Internal/External

Sold in Quantity:

Each

Bore Size:

4.125"

Intake Manifold Type:

Single Plane

Carburetor Flange Type:

4-Barrel Square Bore

RPM Range:

2,500-7,000

Stroke:

4.000"

Main Journal Style:

400 mains

Crankshaft Material:

Forged 4340 Steel

Piston Ring Style:

C

Piston Ring Design:

Gapless Top Ring

Sold in Quantity:

Set

Connecting Rod Type:

I-Beam

Piston Style:

Flat Top w/ 2 valve reliefs

Piston Material:

Hypereutectic Aluminum

Connecting Rod Type:

I-Beam

Piston Style:

Dish

Piston Material:

Hypereutectic Aluminum

Piston Style:

Dome

Piston Material:

Hypereutectic Aluminum

Wrist Pin Included:

Yes

Piston Style:

Dome

Piston Material:

Forged Aluminum

Wrist Pin Included:

Yes

Piston Style:

Dome

Piston Material:

Hypereutectic Aluminum

Wrist Pin Included:

Yes

Grooved Bearing:

Yes

Groove Location:

Upper

Bearing Material:

Tri-metal copper-lead nickel

Piston Style:

Flat Top w/ 2 valve reliefs

Piston Material:

Hypereutectic Aluminum

Wrist Pin Included:

Yes

Piston Style:

Dome

Piston Material:

Hypereutectic Aluminum

Wrist Pin Included:

Yes

Piston Style:

Flat Top w/ 2 valve reliefs

Piston Material:

Hypereutectic Aluminum

Wrist Pin Included:

Yes

Intake Duration (.050" Lift):

237

Exhaust Duration (.050" Lift):

243

Lobe Separation:

108 °

Bore Size:

4.125"

Overall Thickness:

.050"

Stroke:

3.750"

Main Journal Style:

400 mains

Crankshaft Material:

Cast Steel

Stroke:

3.875"

Main Journal Style:

400 mains

Crankshaft Material:

Forged 4340 Steel

Sold in Quantity:

Each

Gasket Bore:

4.190"

Material Type:

Steel

Stroke:

3.750"

Main Journal Style:

400 mains

Crankshaft Material:

Cast Steel

Sold in Quantity:

Set

Garage Sale Type:

Open Box

Stroke:

3.750"

Main Journal Style:

400 mains

GTIN Code:

614046642447

Outside Diameter:

8"

Material Type:

Steel

Connecting Rod Type:

H-Beam

Piston Style:

Dome

Piston Material:

Forged Aluminum

Connecting Rod Type:

H-Beam

Piston Style:

Flat Top

Piston Material:

Forged Aluminum