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Old 06-30-2020, 10:45 AM
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trying to identify year of my chevy 350

My chevy 350 is installed in my jeep and i'm trying to find out what year to get the right parts for it. I have the following numbers: from the block in the front behind the Alternator is V02 171 XB and on the drivers side stamped in the casting behind the head is the following numbers 397010 GM 18 B125 Any help in identifying the year would be greatly appreciated.

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Old 06-30-2020, 01:25 PM
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Looks like a 1969, 4bbl, 350.

Check this link out, it's pretty useful:

https://nastyz28.com/sbchevy/sblock.html

Bogie
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Old 06-30-2020, 08:16 PM
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Re-check your numbers a little closer, some of the info you c=gave doesn't fit the known numbers format.

first, the casting number and date code.
The block casting number you gave doesn't exist, but it is fairly easy to figure out what you meant...."397010" is a digit short, the actual number is probably "3970010" which is a 4.00" bore block made from 1968-1979.
The date code "B125" come out as "B" = February, "12" = day, "5" = last digit of year, which for that block casting would have to be 1975.

Now we get to the stamped application code you gave us....there are too many numbers in the middle of the code. V02171XB
"V" = Flint Engine Plant, "0217" = month (02) February, Day (17th), "1XB" is a code that doesn't exist.

1975 engine would have a three letter application code, so 1XB doesn't fit.....But "TXB" does fit, and comes up to a 1975 350, 165 HP 4 barrel engine from a conventional cab C-20 toC-3500 truck.

So check those numbers again...the block casting code, block date code, and engine stamp date all match up to the 1975 application, and the casting date and stamp date are both in February, less than a week apart....just the "1" in "1XB" does not fit the format....look close, it is likely to be some other letter, maybe not stamped real clearly.
It is also possible the guy who assembled the number stamp just messed up, that there is a "1" there but it should have been a "T".

I think you've got a 350 out of a 3/4 ton or bigger truck from 1975.....and not a 1969 350
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Old 07-01-2020, 03:10 AM
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Quote:
Originally Posted by Modified Jeep View Post
My chevy 350 is installed in my jeep and i'm trying to find out what year to get the right parts for it.
What kind of parts are you looking at? Most parts fit about any of the small block Chevies... the head casting number under the valve cover would be informative... If it really is a 1975 truck engine and depending on what parts you are talking about, and your intended usage, you may want better parts than came stock on those weak power emissions slug engines...
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Old 07-01-2020, 05:55 AM
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For a 350, the exact year of the engine is often not that critical for many aftermarket parts.

If you are looking at bolt-on parts you need to know the type of heads (70s emissions, vs. TBI vs. Vortec, vs. aftermarket), long vs. short water pump, one piece vs. two piece RMS, roller ready vs. flat tappet block, and a few other specs. All of this is relatively easy to determine by pulling a valve cover and maybe the intake manifold.

I have a 75 truck (originally a 350) with a GMPP crate engine purchased in 2004. Up to the point I swapped to aftermarket aluminum heads and a retrofit roller cam, I just bought parts for a 1975 350, since my 2004 crate engine was nearly identical.

Bruce
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Old 07-01-2020, 07:54 AM
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Cheyv parts.

We have a SBC and 350 trans in our Farm Forklift built on a cut down truck chassis. After researching all the numbers I could find finally found the right water pump. this time I wrote the info under the hood with a Sharpie. With 8 trucks and who knows what was done in the past when ever I do something I list it under the hood.
A neighbor has a SBC in their shop and the numbers say a 4 bolt Low hp truck engine. My son wants a 4 bolt to rebuild. so I will push some dirt with my backhoe for it.
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Old 07-01-2020, 09:32 AM
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Quote:
Originally Posted by 75gmck25 View Post
I just bought parts for a 1975 350, since my 2004 crate engine was nearly identical. Bruce
And the base level + 2020 + Chevy 350 crate engine is also still mostly identical to a 1975:

https://www.summitracing.com/parts/NAL-12681429
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