SP350/385 Base

SP350/385 Base- Tech Specs

Part Number: 19333157

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 12556307): Forged steel

Connecting Rods (P/N 10108688): Powdered metal

Pistons (P/N 10159436): Hypereutectic aluminum

Camshaft Type (P/N 10185071): Hydraulic roller

Camshaft Lift (in.): .474 intake/ .510 exhaust

Camshaft Duration (@0.050 in.): 208° intake / 221° exhaust

Cylinder Heads (P/N 19300955): Fast Burn aluminum; 62-cc chambers

Valve Size (in.): 2.000 intake / 1.550 exhaust

Compression Ratio: 9.6:1 nominal

Rocker Arms (P/N 10089648): Stamped steel

Rocker Arm Ratio: 1.5:1

Recommended Fuel: Premium

Maximum Recommended rpm: 5800

Balanced: External

SP350/385 Base

SKU: 19417781


Price Starting At $7,524.65

Horsepower: 385 HP @ 5600 RPM

LB-FT Torque: 405 LB-FT @ 3600 RPM TORQUE

A legendary foundation for performance
Building on the strength and power of its predecessors, Chevrolet Performance engineers have upped the ante with a revised cylinder head design, new valvetrain components, and more to create the SP350/385 Base—a 385-horsepower 350 with loads of low-end torque. In fact, the SP350/385 Base Small-Block engine produces at least 405 lb-ft of torque by only 3600 rpm for a thrilling feeling of immediate performance.

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, as the egg-shaped springs have less reciprocating mass in motion, require less spring pressure for greater valve control, and handle valvetrain stresses more efficiently.

As with all of Chevrolet Performance’s Small-Block crate engines, the SP350/385 Base 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 this new crate engine at a glance, too.

The base crate engine package includes an aluminum intake manifold, distributor, water pump, damper, flexplate, and more.

Installation Notes

  • Comes with 12.750 externally balanced 153-tooth automatic transmission flexplate. Change to externally balanced flywheel for manual transmission applications.
  • Requires fuel line from fuel pump to carburetor
  • Fuel pump pressure is pre-set; fuel pressure regulator not required
  • Designed for pre-1976 street vehicles or off-road vehicles
  • Some assembly and minor engine tuning required
  • Not intended for marine application

*Images may be stock photos and may not represent the actual part. Part numbers and prices are subject to change without notice



phone: 780-486-3335

fax: 780-486-7357


Wolfe GMC Buick
18325 Stony Plain Rd NW
Edmonton, T5S 1C6

*Images may be stock photos and may not represent the actual part. Part numbers and prices are subject to change without notice

©2017 by GM PARTS EDMONTON a division of Wolfe GMC Buick. Built and hosted by Creative Computer Consulting