What do the numbers mean on a Chevy big block engine?

The plant where the Chevy big block engine was manufactured is the first character. The following numbers are the day, followed by the month. For example, a prefix code of T1218: “T” stands for town of Tonawanda, 1218 stands for Dec. 18. Decipher the remainder of the numbers of the Chevy big block engine.

How do you find the date on a Chevy big block?

Find the code date of the Chevy big block. The code is a letter followed by three numbers and is above the bell housing. Compare the letter in the code to the month of the year. January is A, February is B, March is C, April is D, May is E, June is F, July is G, August is H, September is I, October is J, November is K and December is L.

Is there such a thing as a 454 big block?

NO the 396to454and 502 are all 9.800 the tall deck is the big truck block and only came as 366and 427 the tall deck blocks 10

Where do you find the VIN number on a Chevy big block?

Analyze the VIN number verses the reference material. The numbers should match exactly with the vehicle in which the Chevy big block engine came from. Locate the rear intake China wall, also known as the rear intake manifold. Find the code date of the Chevy big block. The code is a letter followed by three numbers and is above the bell housing.

What’s the JQ stamp on my 396 engine block?

But i forgot what the jq stamp on the block may be from a camaro, nova,elky for 69 or the lower comp 396 for 69 only in imapalla’s?. Even the lower perf 396 for 69 had same shortblock as 325/350hp motor,it just had dif heads with larger comb chambers to lower comp to 9.0 for reg fuel along with 2brl carb & intake & cam from the 325hp 396 too.

How to decode big block chevy engine suffix codes?

Big Block Chevy Suffix Codes: IK – MZ. Abbreviations: AB = Air Brakes, AR = Air Injector Reactor, CA = California, HD = Heavy Duty, hdc = heavy duty clutch, HP = High Performance, LP = Liquid Propane Gas, PG = Powerglide, mt = manual trans, mt-3, 3 speed manual, SHP = Special High Performance, TH = Turbo Hydramatic,…

What does t stand for on a Chevy big block engine?

For example, a prefix code of T1218: “T” stands for town of Tonawanda, 1218 stands for Dec. 18. Decipher the remainder of the numbers of the Chevy big block engine. This is called the suffix code and identifies the engine by explaining the original casting of the engine and the year in which the engine was produced.

What is the engine number on a Chevy Chevelle?

Chevy used one to three letters of the alphabet to code the type of engine, transmission and vehicle into the suffix code. In that case you might see “T0601ED 6A174373” stamped into the pad on the front passenger side of the block.

What kind of block does a Chevy Chevelle use?

Chevrolet shows this block only used in 4-bolt versions in 1969 Chevelles. Supposedly used only by Camaros in 1970, this block is documented in a 1970 Chevelle, 350-4 w/TH350. Also used from 71-73 in Camaro (71) and Corvette (early 73) as well as Chevelles in 1973. Used for 307 applications only.

What is the VIN number on a Chevy small block V8?

The format consists of divisional identification number, model year, assembly plant designation and vehicle serial or sequence number. In 68-69 model cars, the serial (VIN) number of the car the engine was installed in is stamped next to, or under the engine code ID.

What are the suffix codes on a big block Chevy?

Big Block Chevy Suffix Codes: CTH – IJ GM body designation. All these are identified here. Quickly, A = Chevelle, F = Camaro, X = Nova. If you’re looking at the engine code – this is already known.

When was the Chevy big block engine cast?

This number indicates the year in which the Chevy big block engine was cast. The “5” in the previous example would indicate the Chevy big block engine was cast in 1965, 1975 or 1985. To locate the exact year, refer to the reference material.

How tall is a big block Chevy truck?

Casting Year CID Main Caps Comments 340220 1972-76 427 4-bolt tall truck 345014 1974-86 454 . truck 346236 1974-76 454 2 215, 2 bolt 359070 1974-90 454 . truck

Decoding Big block Chevy engine suffix codes and stamped numbers CTH – IJ | Monaro Shrine Monaro Shrine homenamehistorycompetitionhkhthghqhjhxhzvxidentificationmodelslinks Big Block Chevy Suffix Codes: CTH – IJ GM body designation. All these are identified here. Quickly, A = Chevelle, F = Camaro, X = Nova.

Where is the casting number on a Chevy big block engine?

Locate the six- or seven-digit number on the cover of the engine’s timing chain. Locate the casting number in between two bolts directly under the GM logo.