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LT1

LT1, Next-Gen Small-Block 

Introduced on the seventh-generation Corvette Stingray, the LT1 6.2L opened the next chapter in the long, historic legacy of the Small-Block engine.

PART NO. 19355405

WhyBuy

455 HP @6000 RPM

WhyBuy

455 LB/FT @4400 RPM

Advanced Combustion

The LT1 is architecturally similar to the LS family of engines, but with a unique block casting, cylinder head design, oiling system and more. The LT1 is offered with a wet-sump or dry-sump oiling system.

Connect & Cruise Powertrain System

Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit installations in older vehicles.  

Project Cars

These passion projects were brought to life with a convenient Connect & Cruise Powertrain System.

1971 CORVETTE 

The legend continues. 

This 1971 Corvette proves it’s possible to improve on perfection with the 460-hp LT1 crate engine and T56 Super Magnum 6-speed transmission.

Installation Guides

Find everything from vital data about your engine’s capabilities to how to install it into your build.

LT1 Tech Specs

  • Part Number: 19355405
  • Engine Type: Direct Injection spark-ignition Gen-V Small-Block V-8
  • Displacement (cu. in.): 376 (6.2L)
  • Bore x Stroke (in.): 4.065 x 3.622 (103.25 x 92mm)
  • Block (P/N 12619171): Cast aluminum with 6-bolt nodular iron main bearing caps
  • Crankshaft: Forged steel
  • Connecting Rods: Forged powdered metal
  • Pistons: Hypereutectic Aluminum
  • Camshaft Type (P/N 12629512): Billet steel roller
  • Valve Lift (in.): .561 intake / .531 exhaust
  • Camshaft Duration (@0.050 in.): 242° intake / 244° exhaust
  • Cylinder Heads (P/N 12620544): Aluminum, rectangular port D/I
  • Valve Size (in.): 2.130 intake / 1.590 exhaust
  • Compression Ratio: 11.5:1
  • Rocker Arms (P/N 12619829 int): Investment-cast, roller trunnion
  • Rocker Arms (P/N 12619829 exh): Investment-cast, roller trunnion
  • Rocker Arm Ratio: 1.81:1
  • Recommended Fuel: Premium pump
  • Maximum Recommended rpm: 6600
  • Reluctor Wheel: 58X
  • Balanced: Internal

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  • Requires available Performance Exhaust or Z51 Performance Package.

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  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.