Now available from Engine Factory. Chevy LM7 5.3L Designed for 1999-2020 Chevy Applications. Engine Factory also Has a simple kit available to easily mount an early style Trans Like a 700 R4, TH 350, or even a power glide, to the Back of this Modern engine. Now you can install your early Transmission with no trouble to convert your 70’s muscle car, Or C10 pickup onto this Modern engine. Now available with full serpentine Pulley systems as an option.
Crate engine is a powerful 500 horsepower, 440 lb-ft torque setup built on a durable OE LM7 iron block with a 3.903″ bore and 3.622″ stroke, resulting in 347 cubic inches of displacement. It features an OE GM 24-tooth reluctor wheel crankshaft, HD Connecting rods, with HD bolts, hypereutectic 10:1 compression pistons with moly rings for durability. The valvetrain includes a custom performance hydraulic roller camshaft, 1.7 ratio rocker arms, and AFR CNC-ported aluminum cylinder heads with 59cc combustion chambers and 200cc intake runners for optimized airflow. This package includes a FiTech Ultra Port Injection LS1 750HP EFI system with 55lb fuel injectors, transmission control wiring harness, and ECM/TCM, providing modern fuel delivery and management. It also comes with a Melling M295 oil pump, Autolite #104 spark plugs, and 8mm plug wires, making it an ideal choice for high-performance street or strip builds requiring 91+ octane fuel, a 2200+ stall converter, and 1 5/8″ or larger headers. Fits most Pickups, Vans, and early muscle cars.
- 500 HP
- 440 TQ
- OE LM7/5.3L Iron Block
- 3.903” x 3.622 Bore/Stroke
- 347 ci Displacement
- OE GM 24 tooth reluctor wheel Crankshaft
- Heavy duty connecting Rods and Bolts
- Hypereutectic 10:1 compression Pistons
- Moly Rings
- Hyd. Roller Camshaft Efi compatible with good Vacuum
- Custom performance grind Cam Specs
- OE single roller Timing Chain
- AFR CNC ported aluminum 59cc/200cc 2.000”in/1.570”ex Cylinder Heads
- OE 1.7 ratio Rocker Arms
- Melling M295 Oil Pump Crank driven
- FITECH Ultra port injection LS1 750HP Capable, with transmission control (wiring harness & ECM/TCM included) EFI System
- FITECH 55lb Fuel Injectors
- Autolite #104 Spark Plugs
- 8mm Spark Plug Wires
- internally balanced Balancer and Flex-plate
Specs
- Conventional / Non Synthetic 10W30 Oil
- Wix or K&N Oil Filter
- .040” Spark Plug Gap
- 18726543 Firing Order
- 91+ Octane pump gas
- 2200+ Stall Converter
- 1 5/8+ Exhaust Headers
- Live run and video
- Sold Outright No core charge $13,995.00
Plus options below
- Alternator and pulleys $2,340.00
- Alternator and PS Pump $2,440.00
- Alternator, Ps Pump and A C $2,540.00