GM Crate Engine - SP350/357 Deluxe

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POWER, DURABILITY AND AFFORDABILITY IN THE CLASSIC SMALL-

BLOCK 350!

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As the latest in Chevrolet Performance’s Street Performance crate engine lineup, the SP350/357 is designed as an affordable performer to match just about any budget. Better still, it uses stronger components and modern technology to make it a better alternative to rebuilding.

Based on the value-driven 350 HO crate engine, our engineers swapped the flat-tappet camshaft for a hydraulic roller and added the latest Small-Block intake manifold design. Together, they help build more power across the rpm band – 357 horsepower and 407 lb.-ft. of tire-turning torque.

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. It’s a durable assembly designed to offer years of highperformance excitement at an excellent value.

Our SP350/357 Deluxe package includes the intake manifold, distributor, damper and flexplate. Chevrolet Performance also offers the SP350/357 Base crate engine, P/N 12677167.

TECH SPECS
Part Number: 12677170 / 19367082
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 10243070): Nodular Iron
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: 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 12367346): 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 (P/N 14088765): 12.750"
Intake Manifold (P/N 12676887): Dual Plane

INSTALLATION NOTES
• Holley 4-barrel carb included but not installed on engine
• Comes with 12.750" externally balanced 153-tooth automatic transmission flexplate. Requires externally balanced flywheel for manual transmission.
• Requires fuel line from fuel pump to carburetor
• Designed for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine applications

NOTE: Distributor with melonized steel gear MUST be used with long-blocks and Partial engines with steel camshafts, or engine damage will occur.

Chevrolet Performance Crate Engines include a 24-month or 50,000-mile/80,000-kilometer limited warranty.

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