Chev 350 275HP GM 5.7L Vortec Long Crate Engine # 12691672

Crate Engine Family:

Chev Small Block

Actual Engine Displacement:

5.7L/350

Crate Engine Cylinder Head Material:

Cast iron

Engine Block Material:

Cast iron

Advertised Compression Ratio:

9.4:1

Assembled:

Yes

Engine Balance:

Internal

Cam Style:

Hydraulic roller, OE roller

Rear Main Seal Style:

1-piece

Intake Manifold Included:

No

Cylinder Heads Included:

Yes

Carburetor Included:

No

Throttle Body Included:

No

Distributor Included:

No

Oil Pan Included:

Yes

Valve Covers Included:

Yes

Timing Cover Included:

Yes

Water Pump Included:

No

Harmonic Balancer Included:

Yes

Flexplate Included:

No

Flywheel Included:

No

Air Cleaner Included:

No

Spark Plugs Included:

No

Spark Plug Wires Included:

No

Computer Included:

No

Wiring Harness Included:

No

Supercharger Included:

No

Quantity:

Sold individually.

Chevrolet Performance 350 C.I.D. 9.4:1 Truck Long Block Crate Engines

Got a 1/2 ton, 3/4 ton, or other GM pickup with a tired, sick, or broken engine? Chevrolet Performance has exactly what you need. Their 350 c.i.d. truck long block crate engines are built up from 1996-2002 style 4-bolt main blocks with one-piece rear main seals. To this, Chevrolet adds a nodular-iron crankshaft, powdered-metal connecting rods, and hypereutectic aluminum pistons.

You also get power-producing Vortec cylinder heads with 1.94 in. intake valves and 1.50 in. exhausts, and 64cc combustion chambers that yield a gas-pump friendly 9.4:1 compression ratio. This combination is paired up with a roller cam that has 0.414 in. of intake lift and 0.428 in. for the exhaust. Duration at 0.050 in. of lift is 191 degrees for the intake and 196 for the exhaust, with 111 degrees of lobe separation. These long block crate engines come complete with an oil pan, timing cover, valve covers, and harmonic balancer.