GM Small Block 350 Base Crate Engine 357HP
A NEW STANDARD FOR AFFORDABLE SMALL-BLOCK PERFORMANCE!
If it’s affordable performance you’re looking for to power your project vehicle, Chevrolet Performance’s SP350/357 delivers! With 357 horsepower and a deep reserve of low-rpm torque, it quickly reminds you why Chevrolet’s original 350 Small-Block has been the industry benchmark for decades.
The SP350/357 leverages the strength of a strong rotating assembly secured in a brand-new block with four-bolt mains, along with economical Vortec iron cylinder heads. A roller camshaft optimizes drivability and airflow capability. It all adds up to a 24-horsepower gain over our 350 HO crate engine – and a great, affordable alternative to rebuilding.
Does not include oil filter or adapter see below for part numbers.
Engine Type: Chevy Small-Block V-8
Displacement (cu in): 350
Bore x Stroke (in): 4.000 x 3.480
Block (P/N 10105123): Cast iron with 4-bolt main caps
Crankshaft (P/N ): Forged Steel
Connecting Rods (P/N 10108688): Powdered metal
Pistons (P/N 88894280): Cast aluminum
Camshaft Type (P/N 12677151): Hydraulic roller
Camshaft Lift (in): 0.473" intake / 0.473" exhaust
Camshaft Duration (@.050 in): 215° intake / 223° exhaust
Cylinder Heads (P/N 12558060): Cast iron; as cast with 64cc chambers
Valve Size (in): 1.940 intake / 1.500 exhaust
Compression Ratio: 9.0:1 nominal
Rocker Arms (P/N 10089648): Stamped steel
Rocker Arm Ratio: 1.5:1
Recommended Fuel: Premium pump
Ignition Timing: 32º Total @ 4,000 rpm
Maximum Recommended rpm: 5,600
Balanced: External
Flexplate : Not Included
Intake Manifold : Not Included
INSTALLATION NOTES
• Use the Holley 670-cfm 4-barrel carburetor P/N 19170092 to achieve the listed horsepower and torque
• Requires intake manifold, carburetor, distributor, spark plug wires and water pump to complete assembly
• Requires externally balanced automatic transmission flexplate. Requires externally balanced flywheel for manual transmission.
• Requires Neutral Balanced Damper
• Designed for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine applications