General motor engine identification numbers

Over the years, every American General Motors division, except Saturn, used it and its descendants in their vehicles.

In all, over 90,, small-blocks have been built in carbureted and fuel injected forms since Chevrolet Block Identification number locations. Photo from www. Big Block Chevrolet.

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About Us Sponsors Advertising. Cometic Introduces Toyota 5. Shop Tour: SoCal Diesel. Other content includes an engine code and manufacturing plant.


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GM's VIN format is as follows:. GM used a lettered system of automobile platform codes for three decades. These letters were used as the fourth position of the VIN. Though today's GM platforms use Greek characters, they are still encoded with Latin characters in the fourth position.

Vehicle Identification Numbers (VIN codes)/GM/VIN Codes

Position five encodes the specific model and trim level of the vehicle. Missing Entry: Corvette Z06, vin code S 5.


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GM encodes the engine type in character 8 of the VIN. The following table outlines the various engines encoded there:. It continued it's second iteration, the LG8 3.

Casting Number Database Walkthrough

VIN code T also designates a 3. Such as the 4.


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  • Mercruiser Block ID Codes – Small Block V8 Marine Engines?
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  • Each Year has different break down for each code, a complete list would be a subject of its own. Along with Plants and some model break downs over years. Missing Entry: Limo with engine code 7, is not listed.

    Mercruiser Block ID Codes – 6 Cylinder Engines | enjoshalfmag.tk

    For those of you who rummage around wrecking yards, swap meets or other likely places to find basic GMC engine parts, blocks, cranks, heads, etc. Unfortunately, even knowing the GM part number is not helpful, since the major pieces are not marked that way. The following list of casting and forging numbers may help in determining your degree of interest in a particular part.