How do I find out all the Engine Casting Codes for me 327 300hp Corvette for numbers matching?

Answer 1

An excellent publication -
Has all casting numbers for blocks, heads. cranks, connecting rods. Pictorials of displacement of cylinder heads & much more. . .

http://www.allbookstores.com/book/9781557880291/David_Vizard/How_To_Rebuild_Your_Small-Block_Chevy.html

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Answer 2

1

Answer 3

Engine Code Stamping Numbers
All engines are stamped with an engine ID code which consists of a prefix and a suffix. The location of this code depends on the type of engine, as follows:

Small Block Chevy: Machined pad in front of the passenger side cylinder head. Often hidden by the alterator.

Big Block Chevy: Above timing chain cover.

Six Cylinder: Passenger side of the block behind the distributor.

The prefix portion of the ID code tells you the assembly plant code, and the engine's production date (for example, 0701 = July 1st....no year is indicated). The suffix portion tells you the original model year / engine / transmission / car combination when it went down the assembly line (for example, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400).


If you are researching a car that is supposed to be "matching numbers" then keep in mind that the engine date must precede the car build date, otherwise something is amiss. Some engine machining operations (decking) will obliterate the engine ID.

Engine ID Code Example: V0107CLJ - (V = Plant, 01 = January, 07 = 7th Day, CLJ = Engine Suffix Code)
Another example: T0830CTY - (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400)

Code Engine Plant Code Engine Plant
F Flint (Motor) S Saginaw Service
H Hydramatic T Tonawanda
K St. Catherines, Ontario V Flint (Engine)
(McKinnon Industries Canada)
M GM of Mexico


Suffix Portion of Chevy Engine Code

Suffix codes are alphabetical. Select the portion of the alphabet for your code. For example, select "DTR-HQ" if you'd like to find code DZ. In some cases suffix codes are reused twice or more over time, in this event check the block casting date code and then see what year the block was made to pin down what application your block was originally used in.

Small Block Engine Suffix Code Menu

3N - CDR | CE - CMJ | CMK - CUD | CUF - DTM | DTR - HQ |
HR - TBS | TBT - TJS | TJT - TXB | TXC - UTT | UTU - ZY |

Big Block Engine Suffix Code Menu

0FC - 9XZ | AAA - CTB | CTH - IJ | IK - MZ | Q - YZ
Note: CODE CE was used from 1968 to current year. It represents any CID and is used to indicate a Warranty Engine.
VF292800 - is an example of a over the counter crate engine. "2800" is the last 4 digits of the GM part # for the crate engine assembly. The final digit could be a year code.
Another example: A Targetmaster engine (p/n 14009800) built in 1985 could have a code stamped as follows:
A0198005 (A = january, 01, 9800 = pn, 5 = 1985).

The above list of codes is a summarization, it is not complete.
Casting Date
Small block casting date is located on driver side rear of block on flange forward of bellhousing. Big block on the right side of engine above the oil pan rails.

Casting Date Example: E038 - (E = Month, 03 = Day, 8 = Last digit of model year (1978)).

Month: A = Jan, B = Feb, C = Mar, D = Apr, E = May, F = Jun, G = July, H = Aug, I = Sep, J = Oct, K = Nov, L = Dec

VIN Code Format
The vin code format is stamped onto most engines. 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.
Starting in 1970, the serial number is stamped either above the oil filter, somewhere on the block pad (in front of the cylinder head), or on the transmission flange somewhere. Chevrolet issued technical service bulletins to indicate which engines were to recieve a vin stamp, so who knows what could have happend (or not happened).

VIN code format Example: 13N100001
(1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN)

For a list of assembly plants, click here.

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 the additional bolts keeps the bottom end rigid and less prone to failure. However, a properly prepared 2 bolt main engine will work just fine (often times you'll lose a rod bolt before you break a crank because it's "only" a 2 bolt main).



Years Casting CID lo powr Hi Powr Main Caps Comments

1962-67 3789817 327 210 275 2 car, truck

1968-69 3794460 327 250 250 2 truck

1968-69 3814660 327 - - 2 F A

1963 3830944 327 - 300 2 -

1964-67 3852174 327 - - 2 car, truck

1962-67 3858190 327 - - 2 -

1967 3903352 327 210 350 2 cars only

1968-69 3914638 327 - - 2

1969 3932386 327 210 210 2 Camaro

1968-69 3933100 327 - - 2

1968-69 3933180 327 - - 2

1962-67 3953512 327 - - 2

1968-69 3955618 327 - - 4 A,F,Vette

Answer 4

As far as running the 327 against the 350, enjoy the way the 327 works and don't worry about depreciating the price. Why are you buying the car, for the enjoyment of it or to try and make a buck when you see it? Answer that question and you will know what to do yourself. Most cars will not get more money back if you sell them later as the time and money spent to upgrade or bring them back to original will not amount to the same as you will get when selling. Love your car for how it drives and feels, not how much it's worth. Good luck.

Answer 5

The absolutely free reverse vin check sites generally provide fake information. To get real information, money will have to be paid. The free searches provide fake information so they can get your email address to send spam.

Stay away from shady reverse vin check sites, most likely you won't get any information after you make the payment. Not to mention you won't get a report and you won't get an answer if you try to call for a refund. Stick with a reputable reverse vin check site like http://www.reversevincheck.net that has been around since 1995.

Answer 6

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Answer 7

http://www.amazon.com/Corvette-Numbers-Alan-Colvin/dp/0837602882
Try getting a hold of this reference book or contact a local Corvette club