Description
Fifth Generation LT1 Chevrolet Performance LT-Series Crate Engine 19431953
455hp @ 6,000 rpm
455 lb.-ft. @ 4,400 rpm
NOTE: Includes oil cooler line and oil tube/cap assembly (not shown in photo).
The LT1 6.2L opened the next chapter in the historic legacy of the Small-Block
engine—and it gives your project vehicle a high-tech heart transplant with
a balance of performance and efficiency. Our crate engine is rated at 455
horsepower and 455 lb.-ft. of torque.
The LT1 is architecturally similar to the LS family of Small-Block engines, but with
a unique block casting, cylinder head design, oiling system and more. It also
combines advanced technologies, including direct injection and continuously
variable valve timing. See page 115 for the recommended controller.
Chevrolet Performance LT1 Crate Engine Installation Notes
- Engines shipped with high-pressure direct-injection fuel pump installed
- Assembly does not include any electronics
- Select the right controller kit for your LT1 Engine (see chart in catalog)
- Not intended for marine applications
- Front-End Accessory Drive system must be ordered separately (see catalog)
- Use P/N 19417547 Front-End Accessory Drive system without air
conditioning and P/N 19369182 A/C add-on kit (see catalog) - Can accommodate P/N 19420208 Hydraulic Power Steering Kit (not included
with Accessory Drive System, see catalog) - Includes 8-bolt flexplate
- Chevrolet Performance control kits do not use the Active Fuel Management
components on this crate engine
Mobil 1 is the recommended engine oil for all Chevrolet Performance Engines
Chevrolet Performance Crate Engines include a 24-month
or 50,000-mile/80,000-kilometer limited warranty, whichever
comes first. See your GM dealer for details.
Chevrolet Performance does not utilize any used or
remanufactured parts in this crate engine, except for
the starter, alternator and power steering pump
This part is intended for competition use only.
See page 2 of catalog for complete details
| TECH SPECS | Part Number: 19431953 |
| 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 12718007): | Cast aluminum with 6-bolt nodular iron main bearing caps |
| Crankshaft (P/N 12710954): | Forged steel |
| Connecting Rods (P/N 12669756): | Forged powdered metal |
| Pistons (P/N 12664891-L, 12664890-R): | Hypereutectic aluminum |
| Camshaft Type (P/N 12629512): | Billet steel roller |
| Valve Lift (in): | 0.550 intake / 0.522 exhaust |
| Camshaft Duration (@.050 in): | 200° intake / 206° exhaust |
| Cylinder Heads (P/N 12699617): | Aluminum, rectangular port D/I |
| Valve Size (in): | 2.130 intake / 1.590 exhaust |
| Compression Ratio: | 11.5:1 |
| Rocker Arms (P/N 12619829): | Investment-cast, roller bearing trunnion |
| Rocker Arm Ratio: | 1.81:1 |
| Water Pump (P/N 89060527): | Cast iron |
| Recommended Fuel: | Premium pump |
| Maximum Recommended rpm: | 6,600 |
| Reluctor Wheel: | 58x |
| Balanced: | Internal |
