Horsepower: 435 HP

Torque: 445 LB-FT

Modern Technology Adds Range to the 383 Stroker

Chevrolet Performance’s SP383 uses LS-inspired valvetrain technology to expand its rpm range, matching the stroker combination’s traditional torque with more high-rpm horsepower. Lightweight aluminum cylinder heads based on the proven Fast Burn design are at the heart of the SP383’s performance capability. They feature beehive-style valve springs to enable great high-rpm performance and durability, allowing the SP383 to rev higher and build more horsepower.

Like the Turn-Key crate engine, the SP383 Deluxe is rated at 435 horsepower and 445
lb.-ft. of torque. It comes with the crankshaft balancer, intake manifold, carburetor and distributor installed.

INSTALLATION NOTES

• Requires an externally balanced flexplate for automatic transmission or an externally balanced flywheel for manual transmission. See chart on page 157
• Requires fuel line from fuel pump to carburetor
• Some assembly and minor engine tuning required
• Not intended for marine applications

TECH SPECS

• Part Number: 19435452
• Engine Type: Chevy Small-Block V-8
• Displacement (cu in): 383
• Bore x Stroke (in): 4.005 x 3.800
• Block (P/N 19432109): Cast iron with 4-bolt main caps
• Crankshaft (P/N 12489436): Forged steel
• Connecting Rods (P/N 19355754): Heavy-duty forged steel
• Pistons (P/N 12499103): Hypereutectic aluminum
• Intake Manifold (P/N 12496822): Single-plane aluminum
• Camshaft Type (P/N 19210723): Hydraulic roller
• Valve Lift (in): .509 intake / .528 exhaust
• Camshaft Duration (@.050 in): 222° intake / 230° exhaust
• Cylinder Heads (P/N 19417592): Fast Burn aluminum; 62cc chambers
• Valve Size (in): 2.000 intake / 1.550 exhaust
• Compression Ratio: 9.9:1
• Rocker Arms (P/N 19432297): Aluminum roller style
• Rocker Arm Ratio: 1.5:1
• Recommended Fuel: Premium pump
• Ignition Timing: 36° Total at 4,000 rpm
• Maximum Recommended rpm: 6,000
• Balanced: External
• Flexplate (P/N 14088765): 12.750"

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