Chevrolet Performance GM Replacement Small Block Chevy Crate Engine [1996-2002 L31 HD Vortec 350 ci/5.7L V8]
1996-2002 L31 Vortec Heavy-Duty
Chevy 350 Vortec heavy-duty replacement engine will provide the OE horsepower and torque specifications while adding high-quality durable internals for long-term reliability. New harmonic balancer, oil pan, timing cover, and valve covers come pre-installed allowing less labor time swapping parts around. This engine features precision machine work and final cylinder honing all on computer-controlled machinery.
3 Year/100,000 Mile GM Warranty
Chevy Crate Engine Break-In Guide
Engine Specifications
Power Rating:
- Horsepower: 255 HP
- Torque: 330 ft.-lbs.
Block Information:
- Displacement: 350 ci, 5.7L
- Cast iron
- 4-bolt main
- 1-piece rear main seal
- 9.025 in. deck height
- 4.000 in. bore
- Dipstick provisions on both driver and passenger side
- Mechanical fuel pump capable (no eccentric on camshaft)
Rotating Assembly:
- Stroke: 3.480 in.
- Crankshaft: Forged 1053 steel
- Balance: External rear, internal front
- Rods: Powdered metal 5.7 in.
- Compression Ratio: 9.4:1
- Pistons: Hypereutectic with graphite coating
- Rings: Mahle Clevite
Camshaft Specs:
- Camshaft: Hydraulic roller
- Cam Duration @ .050 in.: Intake 191 / Exhaust 196
- Cam Lift: Intake 0.414 in. / Exhaust 0.428 in.
- Timing Chain: Single-row roller chain
Cylinder Head Information:
- Cylinder Heads: Vortec cast iron
- Combustion Chamber: 64 cc
- Intake Runner: 165 cc
- Valve Size: 1.940 in. Intake / 1.500 in. Exhaust
- Rocker Arms: Stamped steel 1.5
- Valve Seats: Alloy insert
Oil Pan Information:
- Oil Pan: Black 4 quart
- Oil Pump: Melling stock pressure and volume
Long Block Includes
- Short Block
- Camshaft
- Timing Set
- Cylinder Heads
- Valve Covers
- Timing Cover
- Oil Pan
- Oil Pump & Pickup Tube
19432779 supersedes 12691672
Specifications:
Part Type
Cylinder Head Material
Cast iron
Engine Block Material
Cast iron
Engine Make/Size
Chevy Small Block
Engine Assembly Style
Long block
Engine Balance
Internal/External
Assembled
Yes
Horsepower
255
Compression Ratio
9.4:1
Cylinder Heads Included
Yes
Camshaft Style
Hydraulic roller tappet
Intake Manifold Included
No
Carburetor Included
No
Throttle Body Included
No
Distributor Included
No
Oil Pan Included
Yes
Timing Cover Included
Yes
Water Pump Included
No
Harmonic Balancer Included
Yes
Valve Covers Included
Yes
Flexplate Included
No
Flywheel Included
No
Air Cleaner Included
No
Spark Plugs Included
No
Spark Plug Wires Included
No
Wiring Harness Included
No
Rear Main Seal Style
1-piece
Quantity
Sold individually
Exhaust Valve Diameter
1.5 in (38.1 mm)
Engine Displacement
5.7L/350
Engine Type
Replacement Engine
Connecting Rod Material Beam Style
I-Beam
Exhaust Valve Lift with Factory Rocker Arm Ratio (in.)
0.428
Intake Valve Diameter
1.94 in (49.276 mm)
Shipping Weight:
465
Package Height:
41.5
Package Depth:
42
Package Width:
30.5
Part Category:
Performance Parts
Manufacturer | Chevrolet Performance |
---|---|
Manufacturer Part No | 19432779 |
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