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Chevrolet Performance SP383 383ci/435HP Engine

Chevrolet Performance
Chevrolet Performance SP383 383ci/435HP Engine

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Chevrolet Performance's big-torque SP383 is more powerful than ever. We've added revised cylinder heads that incorporate a new, high-rpm valvetrain to help the SP383 produce 435 horsepower and 445 lb-ft of torque. The new, lightweight aluminum cylinder head casting is based on the proven Fast Burn design, with large intake runners and 2.00-/1.55-inch valves. New beehive-style valve springs enable greater high-rpm performance and durability. They allow the SP383 to rev higher, building more power to complement its low-rpm torque.

The SP383 is built with a brand-new block with four-bolt mains. It also features a forged-steel crankshaft, an aggressive hydraulic roller, camshaft and durable, high-silicon pistons. Unique valve covers distinguish the engine from previous versions and it now includes a high-flow, aluminum intake manifold. Use the Holley 770-cfm four-barrel carburetor (p/n 809-19170093) or (p/n 510-0-83770) to make the most of the engine's capability and achieve the listed horsepower and torque ratings. JEGS has everything you need to finish off the engine and get this small-block stroker running in your vehicle faster!

  • Horsepower: 435 @ 5600 RPM
  • Torque: 445 ft/lbs @ 4600 RPM
  • Compression Ratio: 9.6:1
  • Block: Cast Iron 4-Bolt Main with 1-piece rear main seal
  • Crankshaft: Forged 4340 Steel (Externally Balanced)
  • Connecting Rods: Heavy-Duty PM Steel
  • Pistons: Hypereutectic Aluminum
  • Camshaft: Hydraulic roller, 222° Intake / 230° Exhaust @ .050"; .509" Intake / .528" Exhaust Lift
  • Rockers: 1.5:1 Aluminum full roller self-aligning
  • Cylinder Heads: Aluminum Fast Burn 62cc chamber, 210cc intake runners, 2.00" hollow stem intake/1.55" sodium-filled exhaust valves, Blue beehive valve springs, steel retainers, machined steel spring seats and split key locks, D-shaped exhaust ports, dual intake bolt pattern, standard and centerbolt valve cover patterns
  • Comes with 12.750'' automatic transmission flexplate. Requires 1986-1999 350 style externally balanced flywheel for manual transmission
  • Requires addition of carburetor, ignition, fuel pump, and starter (not included)
  • This SP383 engine is a direct replacement for the discontinued ZZ383 engine.

    Note: Not for use in marine applications.

    GM Warranty

  • 2 Products

    SP383 Engine
  • 435 HP @ 5600 RPM
  • 445 ft/lbs Torque @ 4600 RPM
  • FREE

    SP383 Engine Kit
  • 435 HP @ 5600 RPM
  • 445 ft/lbs Torque @ 4600 RPM
  • HEI Distributor
  • Melonized Gear
  • Spark Plug Wire Set
  • Super-Lite Starter
  • 770cfm Carburetor
  • FREE
    Order Today Ships 12/02/15

    2 Products