Classic Parts of America: 1955-1959 Chevy Truck Parts Catalog

CLASSIC PARTS OF AMERICA 1947-1998

Crate Engines

LS3 - 430HP As the standard engine in the fifth-

LS3 - 495HP Our engineers took a production LS3 6.2L (376 cubic inches) and swapped the stock camshaft for the racing-inspired LS Hot Cam (P/N 88958753), which delivered a stunning 495 horsepower and 473 lb.-ft. of torque. That’s nearly 14 percent more power and torque from a simple camshaft change!

generation Camaro SS and C6 Corvette, the high-revving, deep-breathing LS3 6.2L is poised to go down in history as one of Chevrolet’s best and most versatile engines. It’s no surprise that enthusiasts and builders have made it one of the most popular LS swap engines.

We wasted no time in adding that terrific combination – dubbed LS376/480 – to our crate engine portfolio. The key to the power boost is the Hot Cam’s 0.525-inch lift on both the intake and exhaust sides, along with 219-de gree/228-degree duration specs. That’s less lift on the intake side than the stock LS3 cam, but considerably more duration, allowing the valves to stay open longer to draw in more air from the rectangular-port L92-style heads. The crate engine package includes the intake manifold, throttle body and fuel rail, along with the ignition system and exhaust manifolds. Use it with the LS376/480 controller kit P/N 19354330, which includes a special pedal for use with the engine’s electronically controlled throttle. TECH SPECS • Part Number: 19370411 / 19301358 / 19301358 • Engine Type: LS-Series Gen IV Small-Block V-8 • Displacement (cu in): 376 cu in (6.2L) • Bore x Stroke (in): 4.065 x 3.622 (103.25 x 92mm) • Block (P/N 12623967): Cast-aluminum with 6-bolt, cross-bolted main caps • Crankshaft (P/N 12597569): Nodular iron • Connecting Rods (P/N 12649190): Powdered metal • Pistons (P/N 19207287): Hypereutectic aluminum • Camshaft Type (P/N 88958753): Hydraulic roller • Valve Lift (in): .525 intake / .525 exhaust • Camshaft Duration (@.050 in): 219° intake / 228° exhaust • Cylinder Heads (P/N 12629063): Aluminum L92-style port; as cast with 68cc chambers • Valve Size (in): 2.165 intake/ 1.590 exhaust • Compression Ratio: 10.7:1

The LS3 is filled with components designed for high performance and longevity. The aluminum block is filled with a sturdy reciprocating assembly that combines with L92-type rectangular-port heads to deliver a 10.7:1 compression ratio. A high-lift, hydraulic roller camshaft complements the LS3’s tremendous airflow capability and enhances its broad torque curve. Out-of-the-crate Horsepower is 430, with an impressive 425 lb.-ft. torque. Our LS3 crate engine comes complete from the SS-specific oil pan to the ignition system. It also includes the intake manifold assembly with injectors and throttle body, exhaust manifolds, water pump, balancer, 58x reluctor wheel and 14-inch automatic-transmission flexplate. The SS oil pan doesn’t suit all applications. Use the vehicles specific oil pan for original LS-powered vehicles or Chevrolet Perfor mance’s Muscle Car Oil Pan Kit P/N 19212593 for older vehicles. TECH SPECS • Part Number: 19370416 • Engine Type: LS-Series Gen IV Small-Block V-8 • Displacement (cu in): 376 cu in (6.2L) • Bore x Stroke (in): 4.065 x 3.622 (103.25 x 92mm) • Block (P/N 12623967): Cast-aluminum with 6-bolt, cross-bolted main caps • Crankshaft (P/N 12597569): Nodular iron • Connecting Rods (P/N 12649190): Powdered metal • Pistons (P/N 19207287): Hypereutectic aluminum • Camshaft Type (P/N 12623063): Hydraulic roller • Valve Lift (in): .551 intake / .522 exhaust • Camshaft Duration (@.050 in): 204° intake / 211° exhaust • Cylinder Heads (P/N 12629063): Aluminum L92-style port; as cast with 68cc chambers • Valve Size (in): 2.165 intake / 1.590 exhaust • Compression Ratio: 10.7:1

• Rocker Arms (P/N 12669995 int): Investment-cast, roller trunnion • Rocker Arms (P/N 12669993 exh): Investment-cast, roller trunnion • Rocker Arm Ratio: 1.7:1

• Rocker Arms (P/N 12669995 int): Investment-cast, roller trunnion • Rocker Arms (P/N 12669993 exh): Investment-cast, roller trunnion • Rocker Arm Ratio: 1.7:1

• Recommended Fuel: Premium pump • Maximum Recommended rpm: 6,600

• Reluctor Wheel: 58x • Balanced: Internal

• Recommended Fuel: Premium pump • Maximum Recommended rpm: 6,600

INSTALLATION NOTES • Assembly does not include any electronics

• Reluctor Wheel: 58x • Balanced: Internal

• Use LS376/480 Controller Kit, EN-0168 for engine operation. Kit includes electronic throttle pedal, which is required for throttle input to the ECU • Includes Chevy SS wet sump oil pan • Intended for pre-1976 street vehicles or any off-road vehicle • Not intended for marine applications • Front-End Accessory Drive Kits are available in two configurations. EN-0167................................................................................................$8175.63ea

INSTALLATION NOTES • Assembly does not include any electronics • Use LS3 Controller Kit, EN-0166 for engine operation. Kit includes electronic throttle pedal, which is required for throttle input to the ECU. • Includes Chevy SS wet sump oil pan • Intended for pre-1976 street vehicles or any off-road vehicle • Not intended for marine applications • Front-End Accessory Drive Kits are available in several configurations. EN-0165................................................................................................$7848.59ea

107 Fax: 1-816-741-5255 1 Chevy Duty Drive, Kansas City, MO 64150