1955-----3703524 1956-57-----3720991
Numbers on the motor of trucks and other vehicles are identification numbers for the engine block casting. These numbers identify the batch of production the engine block comes from and can be used in recalls.
It's a 4" bore block. Has been used for 302, 327, and 350 engines.
The VIN on the dash will tell you everything you need to know. Engines dont have VIN's. They have casting numbers. Such as "Block Casting Number" or a "Head Casting Number" or a certain/specialized part number. But on old cars this maybe different and I stand corrected.^^This is correct, even for old cars. The block or head casting numbers will tell you the "type" of vehicle the engine was designed for but not the specific VIN is was installed in.Some blocks have numbers for destined for "crate" which means it was not installed in a vehicle, but used as a replacement motor. For US engines, the block number will usually narrow your search down to a 5-10 year block and the type, such as truck or car. Special vehicles, like Corvettes and such, will have specific numbers (because they used aluminum and high performance parts) so the search will narrow down further.
those are block casting numbers That block was used from 1969-1979. it was used in corvettes,camaro,trucks,nova,etc. the pad on the engine block(front edge,right head) will tell you production date ,engine size etc.
The GMC motor with block casting number 8970010 is typically associated with the 5.7L (350 cubic inch) small-block V8 engine. This engine was commonly used in various GMC and Chevrolet vehicles during the 1980s and early 1990s. It is part of the Gen I small-block family, known for its versatility and performance in trucks and cars alike.
That block was used from 1980-1985.
That block was used from 77-79.
It's an engine, not a motor - there is a very significant difference between the two - and that block casting code comes back to a 250 CID General Motors inline six engine (it was used in Chevrolet, Pontiac, Buick, and Oldsmobile applications) manufactured between 1968 and 1984.
That block was used from 1968 through1985.
The GM block casting number 10088036 refers to a specific engine block produced by General Motors, primarily used in small-block V8 engines. This casting number is associated with the 350 cubic inch engine, which was widely used in various GM vehicles during the late 1970s through the early 1990s. The block is known for its versatility and performance potential, making it popular among car enthusiasts for modifications and restorations.
The 1978 400 xx blocks were slightly changed from the "500557" casting used from mid 1975-1977. They are a somewhat beefier casting for use in the Trans am and Formula w-72 400s. They are considered stronger than the "557" block but weaker than 1967-1974 400s. For more info go to http://forums.performanceyears.com/forums/ (largest Pontiac info site on the web) and search for "blocks" in the race section. It has been discussed to death over the years.
GM casting block number 3955582 refers to a specific engine block used in certain General Motors vehicles. It is commonly associated with the small-block V8 engines, particularly from the 350 cubic inch family. This casting number can help identify the engine's specifications, such as its displacement and the model years it was used. Enthusiasts and mechanics often reference this number for rebuilding or restoration projects.