what does the casting number GM 3892657 say about this engine block
chevy 350
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 95-00 350.
There is casting numbers on the side of the block, just above the freeze plugs, that will give the casting date. give those numbers to year one dot com or some dealers, that fool with classics. they have the chart to convert the casting numbers to dates.
stamp #GM-8970010
Find a book on casting numbers for chevys it will give you the year of the block the heads & the manifolds.
double check the numbers... i think you'll find that the first number is a 3 3970010 and it is a 350 ci
motor #3978010
3970010 can be a 350 two or four bolt block.
Right above the motor mounts on the 304 V8 engines there is a large casting mark that says 304.
The best way to identify your motor is to use the casting numbers on the drivers side rear of the block, behind the cylender head. The cylender head casting numbers may help too, they are located under the valve cover.