Chevy LS Engines

Model Year(s) Engine RPO
Monte Carlo SS 2006-07 5.3L LS4
Silverado 1500 1999-06 4.8L LR4
Silverado 1500 1999-07 5.3L Vortec LM7
Silverado 1500 HD 2001-07 6.0L Vortec LQ4


21 sept. 2017

Similarly, How much horsepower does a LS 5.3 have?

The stock 5.3L is factory rated around 320 hp with 340 lb-ft of torque.

Additionally, Is a 5.3 A LS1 or ls2? bore blocks (1999–2007) The 4.8 L and the 5.3 L are smaller truck versions of the LS1 and were designed to replace the 305 and the 350 in trucks.

What did LS Motors come in?

The engine family commonly called the LS series debuted in 1997. General Motors called it the Gen-III Small-Block, with the iron-block versions in trucks and the all-aluminum LS1 introduced in the then-new C5 Corvette.

What are the different 5.3 engines?


5.3L – LM4, LM7, L33, L59

  • LM7 – By FAR, the most common! For varying reasons GM rated the LM7 from 270HP to over 300HP for different years and applications. …
  • L59 – Flex fuel version of the LM7. …
  • L33 – Aluminum HO 5.3L. …
  • LM4 – Aluminum Version of Standard 5.3L.

How can I make my 5.3 LS faster?

  1. Install the basics to begin transforming the 5.3-liter Vortec engine. A high-flow cold air intake is the most basic modification necessary to increase the speed of these engines.
  2. Install a high-flow cat-back exhaust system.

Can you make a 5.3 fast?

Registered. you can make a 5.3 fast. Its not always an option to swap in a 6.0.

How can you tell LS1 from LS2?

The main difference between the engines in the LS family is the displacement, intake, camshaft, and various small details. The LS1 and the LS2 have a lot in common. But, the most obvious difference between the two is the displacement. The LS1 has a displacement of 5.7L, whilst the LS2 has a displacement of 6.0L.

What is a 5.3 engine?

The 5.3L V8 Vortec LMF is a technically advanced small-block V-8 engine that delivers a great balance of power, torque and efficiency. The engine is powerful, but delivers exceptional refinement to go with great strength.

What size engine is a LS2?

The 6.0 liter V8 LS2 engine was produced by General Motors for use in performance vehicles and sports cars. It is part of GM’s Gen IV Small Block engine family and was first introduced in the 2005 Chevrolet Corvette C6, Chevrolet SSR and the Pontiac GTO.

How many different LS motors are there?

LS1, LSX, LSA, LS2, LS9 – there are around 40 different flavours of LS engine ranging from 255hp 4.8-litre donks right through to 650+hp 6.2-litre powerhouses – and that’s without even considering the aftermarket options.

What does LS stand for in LS engines?

LS was Luxury Sport and LT was Luxury Touring. LS used to be the high-end (save SS) model back in the ’80s with the CL (Custom Luxury) package.

Is a Vortec an LS?

Although Vortec engines are “LS” based they are NOT LS engines IMO. Besides most Vortec’s being iron block, as seen above there are some serious size differences and considerations depending on your project. VORTEC ENGINE IN CARS: For the most part, it will be challenging to put a Vortec truck engine into a car.

How do I know what 5.3 engine I have?

The 4.8/5.3L motors are easy to identify by their large 4.8/5.3 casting mark on the front of the block, but there is no simple, external way to differentiate the 4.8 from the 5.3. The best way is to yank a head and measure the stroke.

Whats the difference between an LS and a Vortec?

Although Vortec engines are “LS” based they are NOT LS engines IMO. … You can gain an inch or two by removing the plastic engine cover and cutting some of the plastic tabs on top of the Vortec intake manifold. This may be all you need for clearance and a Vortec will fit in your car.

Is my 5.3 a LM7?

The LM7 is a 5.3L, Gen. 3 small block engine used in GM trucks between 1999 and 2007. For marketing purposes, it was also known as the Vortec 5300. The information listed here is for the stock LM7 engine.

How much boost can a stock 5.3 take?

I’d say a RELIABLE number is somewhere close to 10 if setup properly. I kept my stock high mile 5.3 below 8… 94 lbs is max for the first 3 seconds of a run!

How much horsepower does camming add?

Run with the stock cam, the 5.7L Hemi produced 367 hp and 414 lb-ft of torque. After installation of the new HRT cam from Comp Cams, the power output jumped to 434 hp and 440 lb-ft of torque. The cam swap netted an impressive gain of 67 hp!

How much HP does a tune add?

To give a ballpark figure – if you are on a stock car, you could probably gain 10-15 horsepower from a dyno tune. However, if you are running on performance parts like exhaust and turbo, then 50 horsepower gain is possible – even more depending on your engine and what performance parts you equip.

How much power can a 5.3 Chevy make?

See all 3 photos With just a mild cam and valvespring swap, a diminutive Gen III 5.3L LS can make north of 400 hp.

Can you supercharge a 5.3 Vortec?

Vortech Supercharged 5.3L LS. … On a centrifugal supercharger, more engine speed equals more boost and more boost equals more power. In the case of our LS9-cammed 5.3L, the Vortech supercharger improved the power output from 402 hp and 379 lb-ft of torque to 581 hp and 504 lb-ft of torque.

How do I know what LS engine I have?

What LS Engine Do I Have? To figure out what LS engine you’re staring at, just consult the RPO code. The easiest way to do this is to find the VIN and reference the 8th digit.

How do I know what generation my LS is?

If it has at least one pickup on the timing cover, it’s a Gen 4 engine. Next, you can look at the intake manifold. If the manifold is low, smooth, and rounded, it is a car engine, so if it’s a Gen 3, it will be an LS1 or LS6 engine.