Need to decode this engine block number V0425FCU

that number isnt a good number its a bigblock so should be stamped above timing cover or on the back of the block

14015445 Big Block V8 1978-1990 454, 2 bolt or 4 bolt

It is not a serial number it is the casting number for the block they started producing in 1996 and still going
it being a two bolt it was mostly used in trucks
To find the partial vin and assembly stamp and decoding look at the following site
http://www.thecamaro.com/Decoding/Chevy-Engine-Code-Decoding/

MA 1958283H.D. m/t1602trucks MA 1963283Powerglide1752trucks MA 1967327manual trans.2102Camaro MBit was made in Engine assembly plant: V= Flint, Michigan.
Engine was assembled in March, day 28.
We are sorry but we did not find engine assembly code "CMA" in our database. Please double check it and try again. the c designates car --- ma is engine /hp and trans
NastyZ28 com Chevrolet Decoding Guide the link helps break down the prefix code because would need more info as to exactly what engine yr and hp are MA 1958283H.D. m/t1602trucks---- MA 1963283Powerglide1752trucks---- MA 1967327manual trans.2102Camaro and this is big block MBMA 1969Chevrolet427335Mt
NastyZ28 com Chevrolet Decoding Guide

George, This is weird you say small block but suffix code TPJ comes back 454 cu.in. 230 HP Chev big block.
. TPJ 1992 Truck L-19 TBI VIN N Check the attached links, Good luck.
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Decoding Big block Chevy engine suffix codes and stamped numbers YZ
http://www.1968ss.com/BBCsuffix.asp
Reference Chevy Engine Block Casting Numbers Chevy ********
Chevy V8 Casting Number Locations Part 1

Submit Casting Numbers Casting Numbers info engine blocks heads and more

Try this data base. I have used it before.

You will have to find the casting number on the block, heads, and intake to see if all those are original to that motor, but the block casting number will tell you what year it was made, and the types of vehicles it was used in. It might be difficult to pinpoint exactly what it was in originally if they used it in more than one type car, or produced it more that one year. You can google up a site that will help you find the block casting and decode it for you. Just type in GM engine block decoder

Find the engine identification tag. Attached at the factory, this tag is normally found on the engine block around the coil bolts. The top line of the tag identifies engine size and model year.

Search the block for the engine block casting number. The numbers are raised, not stamped into the block and consist of seven numeric digits. The digits can be located on either side of the block. The seven-digit number may be followed with a dash and further numbers. These are change codes and are not normally necessary to identify the engine.

EX.:

Locate the casting date is located on the block. It is in standard date coding, 2.25.93, for example and may be located on either side of the block, but is commonly located on the driver's side of the block, above the freeze plugs. The example 2.25.93 decodes as February 25, 1993. The casting date may be near the casting clock, which designates the hour the block was cast. Magnum engines were manufactured from 1993 to 2002, so verifying the date code helps identify the engine.

I've attached 2 links to web pages that show the block casting numbers for GM.

http://www.thedirtforum.com/castings.htm

http://www.corvetteblogger.com/2007/12/11/Decoding-a-Corvettes-V8-Casting-Numbers-and-Engine-Stamps/

Look on drivers door should have a plate or open hood on driver side fender on lip that goes under hood when close will be stamp there.