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SP350/357 Base Chevrolet Crate Engine

Brand: Chevrolet Performance

Part Number: 12677167


The product's part number has been discontinued.


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P/N 12677167 has been superseded by P/N 19367080

SP350/357 Base Chevrolet Performance Crate Engine

357 hp @ 5,500 rpm / 407 lb.-ft. @ 4,000 rpm


******AVAILABLE SUMMER 2017*******


A New Standard for Affordable Small-Block Performance - SP350/357 Base Motor!

If it’s affordable performance you’re looking for to power your project vehicle, the Chevrolet Performance 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.

The Chevy Performance base crate engine package includes an assembled long block, including the oil pan and balancer. You finish it off your way, with the ignition system, induction system and additional accessories.

For more complete crate engines, see the GM Performance SP350/357 Deluxe P/N 12677170 and the SP350/357 Turn Key P/N 12677177.


SP350/357 Base Specs:

Part Number: 12677167
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 (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 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

This Chevrolet Performance Crate Engine includes a 24-Month or 50,000-Mile/80,000-Kilometer Limited Warranty

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 intake manifold, carburetor, distributor, spark plug wires and water pump to complete assembly
  • Requires feed 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.

Click here for more detailed warranty information.