Where are the casting numbers on a big-block Chevy cylinder head?

Locating Casting Numbers on Big-Block Chevy Cylinder Heads
When identifying casting numbers on big-block Chevy cylinder heads, the numbers can typically be found in the rocker arm valley. Here’s a detailed breakdown of where to look and what to expect:
Location of Casting Numbers:
– The casting numbers for big-block Chevy cylinder heads are typically located in the rocker arm valley, and they can be found after removing the valve cover on the head.
Cleaning for Visibility:
– It’s important to note that there may be a significant amount of grease and debris covering the casting numbers, so cleaning may be necessary to ensure clear visibility.
Significance of Casting Numbers:
– The casting number is a crucial feature on a cylinder head, as it’s difficult to alter and provides essential information about the head.
Additional Information:
– It’s worth mentioning that the casting date is usually found near the casting number, and both are located under the valve cover, whether it’s a small block V8 or a big block Mark IV V8.
By following these guidelines, you should be able to locate the casting numbers on big-block Chevy cylinder heads effectively.

What are the casting numbers on a block?

The casting number is a series of alphanumeric characters that are usually located on the engine block or cylinder head. It’s a unique identifier that tells you the engine’s make, model, and year.

What are the stamped numbers on a Chevy block?

Stamped Numbers are a set of numbers literally stamped into the block. These numbers are stamped into a machined pad in front of the passenger side cylinder head – more than not it’s covered up by the alternator. These numbers will tell you where the engine was assembled, production date, and the suffix code.

Where are GM block casting numbers?

But. If it’s a newer block. Like. The one in my Camaro. Here it’s a Vortech roller style block. It. Might be on the passenger side rear.

How do I know what generation my Chevy Big Block is?

The Gen VI timing cover is cast aluminum with 6 bolts. The Gen IV and Gen V has 10 bolts. If that engine is original from 92, its either a Gen IV or a Gen V. there are casting numbers behind the timing cover that should tell you, and casting numbers on the flywheel side of the engine that might tell you.

What are the numbers on the front of a Chevy block?

Stamped Numbers are a set of numbers literally stamped into the block. These numbers are stamped into a machined pad in front of the passenger side cylinder head – more than not it’s covered up by the alternator. These numbers will tell you where the engine was assembled, production date, and the suffix code.

How do you identify a cylinder head number?

Cylinder heads may be identified by their casting number, located between the #4 and #5 pushrods. General identification is as follows: 850-1100 heads have a heater tap at 90 degrees to the centerline of the engine. The space between the thermostat housing and the valve cover is small, at 1/16″

Where are the casting numbers on a 454?

First, let’s take a look at some of the numbers on the 454 block you purchased and possibly see what you have. The holy grail of telling us what you have is the casting number on the driver’s rear of the block.

Where are Chevy head casting numbers?

Head casting numbers and the head casting date are located under the valve covers, in the rocker arm valley.

How do I know what generation my 454 is?

The Gen VI timing cover is cast aluminum with 6 bolts. The Gen IV and Gen V has 10 bolts. If that engine is original from 92, its either a Gen IV or a Gen V. there are casting numbers behind the timing cover that should tell you, and casting numbers on the flywheel side of the engine that might tell you.

Where are the numbers on a big block Chevy?

Engine Code Stamping Numbers
The location of this code depends on the type of engine, typically as follows: Small Block Chevy: Machined pad in front of the passenger side cylinder head. Often hidden by the alterator. Big Block Chevy: Machined pad in front of the passenger side cylinder head or above timing chain cover.