- Engines & Components
- Engine - Assembled / Ready-to-Run
- Chevrolet Performance SP350/357 Base 350ci/357HP Crate Engine
The New Standard for Affordable Small-Block Performance!
If it's affordable performance you're looking for to power your project car or truck, 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.
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The SP350/357 leverages the strength of a strong rotating assembly secured in a brand-new block with four-bolt main caps, along with their economical Vortec iron cylinder heads. A roller camshaft optimizes the airflow capability of the cylinder heads which really improves drivability.
This SP350/357 base engine topped with a Chevrolet Performance dual-plane intake manifold and Holley 670-cfm 4-barrel carburetor all adds up to a 24-horsepower gain over the 350 HO crate engine - and a great, affordable alternative to rebuilding.
This base crate engine package includes an assembled long block, including the oil pan and valve covers. The perfect foundation for you to finish it off your way, with the ignition system, induction system and accessories.
SP350/357 BASE TECH SPECS:
- Engine Type: Chevy Small-Block V-8
- Displacement: 350ci
- Bore x Stroke: 4.000'' x 3.480''
- Block: Cast-iron with four-bolt main caps
- Crankshaft: Nodular iron, 1-piece rear main seal
- Connecting Rods: Powdered metal
- Pistons: Cast aluminum
- Camshaft Type: Hydraulic roller
- Camshaft Lift: .473" intake / .473" exhaust
- Camshaft Duration (@.050 in.): 215° intake / 223° exhaust
- Cylinder Heads: Vortec cast iron, 64cc combustion chambers
- Valve Size: 1.940'' intake / 1.500'' exhaust
- Compression Ratio: 9.0:1
- Rocker Arms: Stamped steel
- Rocker Arm Ratio: 1.5:1
- Recommended Fuel: Premium pump
- Ignition Timing: 32° Total @ 4000 rpm
- Maximum Recommended RPM: 5600
- Balanced: External
- Flexplate: 12.750"
JEGS Easy Kits are designed by JEGS high-performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.