How much power does a LM7 have?

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How much power does a LM7 have?

LM4 5.3L Vortec 5300 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More. The LM4 is a 5.3L, Gen. 3 small block engine used in GM trucks between 2003 and 2005. Since LS and Vortec engines are so common, they’ve become the go-to performance and swap engines of the modern era.

Q. How much power can a LM4 handle?

Although an iron block 5.3L will handle more power, the LM4 can still support over 850 whp.

Q. Is the LM4 an LS engine?

LM4 5.3L Vortec 5300 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More. The LM4 is a 5.3L, Gen. 3 small block engine used in GM trucks between 2003 and 2005. Since LS and Vortec engines are so common, they’ve become the go-to performance and swap engines of the modern era.

What did LM4 come in?

Q. What does an LM4 weigh?

I actually weighed my LM4 engine with bathroom scales and deducted 50 lb for the engine stand. I got that stand weight from Harbor Freight. With the intake, alternator, power steering pump, serpentine belt, flex plate, the goofy pass through oil pan and a set of shorty headers it’s 390 lb.

Q. How much HP can a stock L33 handle?

Adding an L33 Engine Supercharger or Nitrous Oxide System Although an iron block 5.3 will handle more power, the L33 can still support over 850 whp. You’ve likely upgraded the fuel system and injectors if you’re looking at power adders.

Q. Are all 5.3 the same?

Though the 5.3-liter displacement has remained the same, Chevy V8s have gone through various generations and changes throughout the twenty-first century. Though, one thing remains constant among them. They are all based on GM’s LS V8 platform, which is well known for its performance applications.

Q. Is the L33 aluminum?

The L33 is a 5.3L, Gen….L33 Engine Blocks.

L33 Block Specs
MaterialAluminum
Displacement5.3L / 325 c.i.d.
Bore Dia.3.780 in.
Stroke3.622 in.

Does L33 have AFM?

3 aluminum block L33 engine came in Chevy and GMC trucks from 2005-07. They can be found for around $1,300 which is inexpensive for an aluminum block engine. The cherry on top is it’s not saddled with Variable Valve Timing (VVT) or Active Fuel Management (AFM) found on some Gen. 4 engines.

Q. What is an LM4 engine?

LM4 – Aluminum Version of Standard 5.3L. The LM4 is essential all the same as a standard LM7 but with an aluminum block. Be careful when searching for engines. Many see the aluminum block and assume its an L33.

Q. What is the difference between the L33 and the LM4?

The L33 is 80lbs lighter than a standard iron block Vortec. The LM4 is essential all the same as a standard LM7 but with an aluminum block.

For varying reasons GM rated the LM7 from 270HP to over 300HP for different years and applications. The LM7 was put in just about every 1/2 ton chassis of truck, van, & SUV for both Chevrolet and GMC from 1999 through the first part of 2007. Because of this and the booming economy of those times this is the MOST common of the GenIII V8 engine.

Q. What kind of Cam do I need for an LM4 engine?

The factory cam is tiny and really holds the engine back. It’s only 191 degrees @ .050 in. duration on the intake and roughly .460 in. lift. An LS3 or LS9 cam makes good power, but not where you want it if you’re using the LM4 engine in a truck. What you need is a cam that delivers a gut-punch right when the converter hits.

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