How Do I Identify My LS Engine Block?

Where is the VIN number on a LS engine?

The vehicle identification number (VIN) is located on the left side rear of the engine block (1) and is typically a 9 digit number stamped or laser-etched onto the engine at the vehicle assembly plant..

What does LS mean on a motor?

Luxury SportLS is the designation for base model (Luxury Sport) where as LT is luxury trim. The LS family (1–9) are GMs standard small blocks created as a replacement in 1995. 1.4K views. The old Chevy Vega had many issues with its aluminum engine.

Are all LS heads interchangeable?

All LS cylinder heads, with the exception of the LS7 heads, are interchangeable among blocks. The LS7 cylinder heads cannot be mounted to other LS blocks, as the wider valve layout would result in valves contacting the bores.

Where are LS block casting numbers?

241 castings (the casting number is found near the corner of the head) are the most common since they were used on every 4.8L and 5.3L truck engine as well as the early LS1s. The LS1 heads have 67cc chambers with 2.00/1.55-inch valves.

What year LS motor is the best?

Best LS EnginesLS9/LSA: Made for the 2009-2013 Corvette ZR1, the LS9 is a supercharged 6.2L engine rated at 638 horsepower — the most powerful of all small blocks. … LS1: This is the one that started it all! … LS7: Introduced in 2005, the LS7 sported 427 cubic inches, making it the largest small block ever.More items…•

Which LS engine is the most powerful?

LS7In stock form, an LS7 makes 505 horsepower and 470 pound-feet of torque making it the most powerful naturally aspirated engine that General Motors has ever put in a production car.

Which LS engine is strongest?

LSX454RThis list starts with the strongest engine of them all – the LSX454R. Under this name hides a 454-cubic inch displacement or CID., and a 7.4-liter, 776 horsepower V8 monster aimed at drag racers. The LSX454R is the most powerful LS crate engine of all time.

Is the 5.3 Vortec a good engine?

The Chevy 5.3 L V8 engine, also known as the Vortec 5.3 or the EcoTec3 is generally looked at as a reliable and trustworthy engine. The Vortec 5300 is a small block V8 that was produced in 1999 for the first time.

Are LS heads side specific?

Most OHC engines the cylinder heads are side specific. On properly engineered engines like the LS1, they are identical. With two driver’s heads, the car will want to turn left. That’s what they do in Nascar because they are always turning left.

How can you tell a 5.3 LS?

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.

What to look for when buying a used LS engine?

Here are a few tips for you to consider before making a purchase.Make Sure The Engine Is Not Locked Up. If you can hear the engine run before you buy it, that is your best option. … Check The Oil. … Ask Questions. … Check The Compression. … Check The Spark Plugs. … Educate yourself.

Why are LS Motors so good?

1. Size/Weight of LS engines. … The main reason that they’re such a compact V8 engine is because of their “old-school” pushrod design, as well as all of the modern designs they used when designing the engine block. The push-rod design that they continue to use is unlike almost all modern engines that have overhead cams.

How much HP does a 5.3 LS have?

GM 5.3L Liter V8 Vortec LMF EngineType:5.3L Gen IV V8 Small BlockChevrolet Express:310 hp (231 kW) @ 5200 RPM SAE CertifiedGMC Savana:310 hp (231 kW) @ 5200 RPM SAE CertifiedTorque: lb.-ft. (Nm)Chevrolet Express:334 lb.-ft. (453 Nm) @ 4500 RPM SAE Certified35 more rows

How many different LS engines 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.

Is Vortec the same as LS?

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. … The block and the heads are LS but the rest of the engines was made to fit a truck not a car.

Is the 5.3 an LS motor?

The 4.8L and the 5.3L engines share the same Gen III LS-series engine block and heads (upper end) and therefore, some parts interchange freely between these engines and other variants in the LS family.