Where are the casting numbers on Chevy cylinder heads?
With more than double the amount of production, this makes the small-block Chevy cylinder heads the world’s most used cylinder heads as well. Casting numbers in Gen I cylinder heads are found near the valve spring seats under the valve cover. The date code stamp is directly under the casting.
How to identify a small block Chevy cylinder head?
Chevy cylinder head Identification – Small block casting numbers, Big block cylinder head, camel back heads, double hump heads Find cast numbers Cylinder Head ID Use these casting numbers to identify the heads you have. Small Block Casting numbers Casting Number CID Years Valves Comments 10065202 350 82-86 1.94/1.50 76cc 10065203 350 82-86
How can you tell if a Chevy head is a performance head?
Chevy heads have often been identified by sight and most commonly by the different casting shapes on the ends of the cylinder heads. While these casting marks cannot tell specifics about the cylinder heads, they can help identify a performance head from a non-performance head.
What kind of cylinder head does a Chevy 350ci use?
Casting numbers 3782461 and 3782461X used 1.94 and 1.50-inch valves. These were commonly called “Fuelie” heads. 10065202: 1987 through 1995 350ci truck engines. 10065203: 1987 through 1995 350ci truck engines.
What do the numbers mean on Chevy cylinder heads?
GM uses a letter code to represent the month when casting the date of manufacture into the cylinder head. For example, a casting number B139 represents: B = February (A= January, B= February, etc.) Chevy heads have often been identified by sight and most commonly by the different casting shapes on the ends of the cylinder heads.
What is the casting number for a Chevrolet head?
Chevrolet Head Casting Number Reference Chevrolet Head Casting Number Reference Small Blocks 330545 350, 73, Corvette, 76cc, 2.02-1.6 valves 333881 350, 74-75, 76cc, 2.02-1.6 valves 333882 350-400, 74-80, 76cc, 160/60cc ports 340292 “Turbo” Over Counter Angle Plug, 64cc, 2.02-1.6 valves 354434 262-267-305, 75-79, 163/57cc ports LW casting
Where are the casting numbers on a SBC cylinder head?
Casting numbers in Gen I cylinder heads are found near the valve spring seats under the valve cover. The date code stamp is directly under the casting. This cylinder head has a casting number of 3947041 and a date code of J108 signifying that this cylinder head was cast on October 10, in a year that ended in 8 (1968, 1978, 1988, etc.).
What is the date on a Chevelle V8 cylinder head?
Cylinder heads are normally date coded in the form of a letter for the month (see table below), two numbers for the day and a single number for the year. For example, C259 indicates a date of March 25, 1969. Caveats to production dates.