Small block chevy id numbers

Small-Block Chevy Gen-I Cylinder Heads. Chevrolet Small V-8 Cylinder Block Casting Numbers 1955-1985 These listings are always a.

The identification numbers on a Chevy engine with a small block V-8 are adjacent to the cylinder heads on the passengers side close to the front of the engine block.

Small block chevy id numbers. All engines are stamped with an ID serial number showing plant code production date and suffix code. The suffix tells you application original model Engine RPO and HP and transmission that were originally mated to the engine. Chevy Small Block - Engine Block Casting Numbers Notes for below.

High Power is the maximum rate HP this block was used for Low Power is the lowest rated horsepower RPO engine the block was used in. Main Caps is the number of bolts holding the cap. A two-bolt main or a four-bolt main.

Four bolt main blocks are desirable in high performance applications because the extra strength of. Small Block Chevy Engine Block Identification General Engine Block Specifications While 6 different bore size blocks have been produced the small block engine can be classified into 3 bore sizes and 3 main bearing sizes. 283 blocks 3875 bore 23 main 302327350 blocks 4 bore 23 or 245 mains and 400 blocks 4126 265 mains.

The first one I usually use is the block casting number which is located at the back of the drivers side cylinder head and will look something like. 10036033 Small Block V8 350 4-bolt Goodwrench crate engine 2-piece rear seal. 10051182 Small Block V8 2 bolt Bow Tie block 375-430 bore 1-piece rear seal.

10051184 Small Block V8 4 bolt Bow Tie 400-4160 bore 1-piece rear seal. 10054727 Small Block V8 1986 350 2-bolt or 4-bolt one piece rear seal. While 6 different bore size blocks have been produced the small block engine can be classified into 3 bore sizes and 3 main bearing sizes.

283 blocks 3875 bore 23 main 302327350 blocks 4 bore 23 or 245 mains and 400 blocks 4126 265 mains. Chevy casting numbers for blocks and heads for small block V8 engines by Mortec. Small Block Chevy V8 Casting Numbers.

To learn how to locate your casting numbers casting dates and suffix codes see Chevy V8 Casting Number Locations Page 1 and Page 2. Quickly A Chevelle F Camaro X Nova. If youre looking at the engine code - this is already known.

If youre looking at the casting information and it mentions 3970010 AFXYB. Basically this means its used in everything whereas if it simply states Y. Engine Code Stamping Numbers All engines are stamped with an engine ID code consisting of assembly plant code production date and suffix code.

The location of this code depends on the type of engine typically as follows. Machined pad in front of the passenger side cylinder head. Often hidden by the alterator.

Small Block Chevrolet engine suffix codes. Engine Code Years Cid Application Engine Vin Hp Bbl Gm Body Comments. Chevy Casting Number identification including Block casting numbers cylinder head casting numbers Crankshaft and intake casting numbers.

Search your casting number. PontiacChevy Aluminum Small Rectangle port. 72cc Bowtie Aluminum Rectangular port 400cc intake.

Oval Port Open chamber. Chevrolet Small V-8 Cylinder Block Casting Numbers 1955-1985 These listings are always a. CHEVY SMALLBLOCK V-8 Crankshaft Casting Numbers.

Small-Block Chevy Gen-I Cylinder Heads. Standard Gen-I small-block Chevy heads position the valves at a 23-degree angle to the deck. In 1989 Chevy introduced the 18-degree Bow Tie aluminum head that shifted the valve-angle vertically while simultaneously raising the intake port to take advantage of this angle.

The advantage of the valve angle. The identification numbers on a Chevy engine with a small block V-8 are adjacent to the cylinder heads on the passengers side close to the front of the engine block. The suffix numbers are located on the padin front of the passenger head at the mating surface between the head and theblock.

The Chevy small block 327-cubic-inch V-8 engine can be identified by its engine code stamping numbers. Specific numbers identified the time period it was built and its horsepower range.