
Chevy LM4 Engine Specs · Help Center - Summit Racing
Engine Block Specifications. Casting Numbers: 12566910. Material: Aluminum. Displacement: 5.3L / 325 cid. Bore Dia. 3.780 in.
Intro to the LM4 and L33 · Help Center - Summit Racing
The LM4 was also known as the Vortec 5300. L33. The L33 was introduced in 2005 as the "High Performance" 5.3L engine. It was only available in the 1/2 ton, 4WD, extended cab Silverado …
Upgrading the LM4 and L33 Engines · Help Center - Summit Racing
The LM4 and L33 are as light as the LS1/LS6, but have thicker cylinder walls to handle boost and nitrous. 850 hp. can be supported with upgraded internals. Although the LM4 has an aluminum …
Intro to the LH6, LC9, LH8, and LH9 · Help Center - Summit Racing
The LH6 replaced the LM4 in 2005. It was the first Gen. 4 LS truck engine and offered Active Fuel Management (AFM). The LH6 was available in GM mid-size SUVs until 2009. It was also …
Intro to the LR4, LM7, and L59 · Help Center - Summit Racing
LR4. The LR4 was introduced in 1999. Along with the LM7 and LQ4, they were the first LS truck engines.The LR4 was available in GM pickups, vans, and SUVs until 2007.
I know my VIN. Which LS engine do I have? · Help Center
Chevrolet's 3rd and 4th generation small block engines are generally known by their RPO code. You can determine the RPO code if you have the Vehicle Identification Number (VIN) from the …
Chevrolet LS Gen. 4 Aluminum Block Torque Specs · Help Center
Related Products: Camshafts & Valvetrain, Cylinder Heads, Engine Assemblies, Oiling Systems, Other Engines & Components, Pistons & Piston Rings, Valve Covers & Dress-Up Kits
Chevrolet LS Gen. 3, Aluminum Block Torque Specs
The following specs apply to RPO codes: LS1; LS6; LM4; L33 **Click the blue links in the table for more detailed information**
Category · Help Center - Summit Racing
LH6 The LH6 replaced the LM4 in 2005. It was the first Gen. 4 LS truck engine and offered Active Fuel Management (AFM). The LH6 was available in GM mid-size SUVs until 2009. It was also …
Chevy L33 Engine Specs · Help Center - Summit Racing
Application Information. VIN 8th Digit. Year. Make. Model. B. 2005-2007. Chevrolet. Silverado 1500, extended cab, 4WD. GMC. Sierra 1500, extended cab, 4WD