19433034 Chevrolet Performance SP350/357 Turn-Key Kit. Replaces 19420883, 19367084, 12677177, 19419993, 19420872, 19431614
357 HP 407 lb-ft Torque 350 Turn-Key Complete Engine Package
AN AFFORDABLE SMALL-BLOCK PERFORMER READY TO RUN!
Chevrolet Performance’s line of Street Performance engines offers great power at a great value – and the latest is the SP350/357. It leverages the strength of a strong rotating assembly secured in a brand-new block with four-bolt mains, and matches it with modern valvetrain technology to support great high-rpm capability.
Economical iron cylinder heads deliver excellent airflow, while the latest intake manifold technology and a new hydraulic roller camshaft optimize airflow to push 357 horsepower and more than 400 lb.-ft. of torque! Better still, the engine is built with a durable rotating assembly set in a brand-new block with four-bolt mains. That’s a feature you won’t find on most rebuildable cores.
Our SP350/357 Turn-Key package comes complete with the distributor, carburetor and balancer installed. The starter, fuel pump air conditioning pump, alternator, front-end accessory drive kit and more are also included, ready to bolt on.
TECH SPECS
Part Number: 12677170
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
• Front-End Accessory Drive included but not installed for shipment
• Comes with 12.750" externally balanced 153-tooth automatic transmission flexplate. Requires externally balanced flywheel for manual transmission.
• Requires fuel supply 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.
