Where are the casting numbers on big block Chevy heads?
Where are the casting numbers on big block Chevy heads?
However, the complete casting number is located beneath the valve cover, usually above an intake port. Additionally, either the last three digits of the casting number or the complete number can usually be found beneath one of the intake ports when a head is viewed from the combustion chamber side.
Are big block Chevy heads interchangeable?
In terms of interchangeability, the biggest concern is chamber compatibility with the pistons and ensuring the compression ratio meets your needs. One thing to keep in mind is that closed chamber heads cannot be used on an engine with domed, open chamber pistons because the dome will physically hit the head.
What are 882 Chevy heads?
GM 882 Iron The smallest of the GM heads we tested at only 151 cc, the 882, turned out to be the best-flowing of the early iron heads. This head was tested with the 1.94/1.50 valves. But be aware that adding 2.02-/1.60-inch valves without blending in the short side radius usually results in lost airflow.
Where can I find my engine number online?
How to Get Engine Number and Chassis Number Online?
- Step 1: Visit the official website of Vahan NR e-Services. Select “Know Your Vehicle Details”.
- Step 2: Log in with your registered mobile number.
- Step 3: Enter details of your vehicle and captcha.
What size heads for 454?
Performer RPM 454-R heads have rectangular 315/300-cc (long/short) intake ports and 118-cc open chambers.
Can you put 454 heads on a 396?
For example, tossing a set of 454 open-chamber heads on a 396 could radically reduce the compression ratio because of the roughly 10cc larger chamber on a short-stroke engine. Production big-blocks all the way into the mid ’90s were always flat tappet camshaft engines.
How many cc are peanut port heads?
GM Iron Peanut Port There are larger factory oval-port, cast-iron, open-chamber heads at 250 cc, but the only ones we could find had been modified, which would not be representative of an OE head.
What year is my engine block?
However, the most accurate way is to look at the serial number on the block, which is located on the drivers side, rear, on the extended part of the deck surface that goes over the bell housing area. The date code for the engine is built into the serial number after the first two numbers.