Quick Answer: Where Are LS Block Casting Numbers?

Where are the numbers on a 327 block?

The casting number on Chevy V8’s is located on the drivers side of the engine where the block is connected to the bellhousing.

It can be a bit hard to see with the ignition shielding in place but the numbers are fairly large..

What year is the best Chevy 350 engine?

L31 (2002) From a purely technical standpoint, the most recent version of the Chevy 350 would naturally be the best of the bunch. Marketed as the “Vortec 5700” engine, but known internally by the moniker of L31, this engine was used primarily in GM vans and trucks until 2002.

How can you tell if a Chevy 350 is block?

How to Identify a Chevy 350 MotorLook at the rear of the engine block for casting numbers, by where the transmission mounts to the engine. … Write down that number, and go to MorTec.com. … Look for a second casting number on the rear of the block. … Look at the front of the block, just forward of the valve covers.

How do I know if I have an engine block?

The simplest way to identify an engine block is to go by the casting number. These alphanumeric codes generally identify a particular block’s series number, displacement range, casting location and date of manufacture. Location varies by manufacturer and engine type.

How do I know if I have a 350 or 327?

Measure the stroke. If the stroke is 3.25 its a 307 or 327. If its 3.48 its a 350.

What is the difference between a 283 and 327?

There is a “wing” looking thingy above the front cover that sticks out of the block. On a 283 you can’t lay your finger in the indentation, on a 327 you can. Hard to explain but easy to see if you know the difference. Easy tell back in the day.

Are all 350 blocks the same?

Re: are all 350 blocks the same? Both of those blocks are very common for replacements in our older trucks. I have the same block, but in the 260 hp version.

How do I know what engine type I have?

Your VIN number is your vehicle identification number and you can find your engine size by VIN number. In the series of numbers and letters, the tenth from the left denotes the model year and the eighth is the engine codes. Just tell the store clerk those two characters and you’re in business.

Where do I find engine block casting numbers?

The block casting number on smallblock and big block Chevy V-8 motors is located on a ledge found at the rear of the block, most often on the driver’s side.

How do I identify my LS engine block?

How to Identify an LS EngineThe 8th digit of the VIN.By visual inspection. The easiest way to tell the difference is to check the 8th digit of the Vehicle Identification Number (VIN) on the original vehicle. (See below.) If you don’t have the VIN, you can still identify the engine by visual inspection if you know what to look for.

Where are Chevy block castings?

The casting number is located on the driver’s side, top rear of the engine block. The number on the front passenger side of the engine block will NOT tell you the displacement of the engine block.

How can you tell if you have a big block Chevy?

The first indication that a motor is a Big Block Chevy is if the codes are stamped above the timing chain cover. All Big Blocks are stamped there. Small Blocks are stamped on a pad in front of the passenger side cylinder head and are often covered by the alternator.

How do I know if I have a 5.7 Vortec engine?

One easy way to identify the 5.7L Vortec engine is to examine the cylinder heads. The GM Industrial Vortec cylinder head was made by installing LT1 Corvette ports into an iron casting. The intake manifold bolts on with an 8-bolt pattern, unlike most other 5.7 GM heads that bolt on with a 12-bolt pattern.

Why is a 327 better than a 350?

A 327 with it’s shorter stroke would need shorter gears so it can GET to its revs, where a 350, with its slightly longer stroke and more torque output will pull a little taller gear than the 327 will.

Is a 327 and 350 block the same?

The difference in the displacement comes from the crankshaft stroke. The 327 uses a 3.25 inch stroke, where the 350 uses a longer 3.48 inch stroke(thats what makes it bigger). Depending on the year of the block, the biggest difference in the block itself is the main journal size.

What is the most reliable Chevy engine?

Dependable Chevys: These are the Most Reliable Silverado Engines6.0-Liter V-8 Hybrid. … 6.0 L Vortec 6000 V8. … 5.3-Liter V-8. … 4.3-Liter V-6. … 6.2-Liter V-8. … Duramax 6.6-Liter Turbo-Diesel V-8.

Why did Chevy stop making the 350?

GM made extensive use of the 350 across its lineup until 2004, when it was discontinued in favor of more modern and fuel-efficient engines. Chevrolet first produced the small block V8 in 1955 as a 256 cubic inch (4.3-liter) engine.

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…•

What is the best LS engine to build?

If it is a large bore that you crave, the 6.0L blocks (LQ4 and LQ9) are the best of the Gen IIIs. These iron anchors were used in the heavier duty trucks, SUVs, and vans. Unlike the 5.7L aluminum blocks, which only take a light hone, the 4.00-inch bores could be enlarged . 030 over like a typical small-block.

Why is the LS motor so good?

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.