Anyone want to decode this sbc?

Casting numbers are: On the back side of the block behind the distributer
3970010 And on the p***enger side front pad are 2 sets of numbers.
They are: V0504TXD and right under it is: C7J163823. I bought the motor off craigslist. The guy said it was a 327, I have quite a few small block chevs sitting here, but none have any numbers stamped on the front pad of the motor. I know one of the numbers is a partial vin, but can anyone tell from what kind of car. I havent pulled the heads or the oil pan yet so I don't know if it's a 2 or 4 bolt main, or what the bore size is. Any help on decoding the numbers is appreciated. Thank you

 

The 010 should mean that it is a 350 but here's the google list for suffix numbers
http://www.google.com/search?hl=en&...=1&q=small+block+chevy+suffix+numbers&spell=1

It shouldn't take you five minutes to figure it out on your own.
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Yeah, I spent 20 min looking at all those sites, none decodes the front pad numbers!

 

Truck 350 I,d say.
TXD 1975 350 165 4 conv.cab

 

go to mortec.com, it lists all sbc blocks. yours says to be either a 1969 302 if its a 4 bolt, a 1969 327 truck and industrial, or a 69-80 2 or 4 bolt 350.

 

It's a Corvette !!! Aren't they all ?? >>>>.

 

Bingo...we have a winner
It was originally installed in either a 3/4 or 1 ton truck

I was typing that too, but hit the wrong ****on and closed out the site...I still do not know how to use these damn computers!

 

Codes that start with "T" are all truck related engines as far as I know.

 

Just checked my chilton's 70 - 77 Mostly all numbers start with a c .Try truck. That casting number 397010 could be 350, 327 or even 305 Good luck .If you could get crank casting number,

 

010 block is indeed a 350 only block.
if it has an 8" balancer, it's probably a 4 bolt main.
they were built 2 and 4 bolt main.

 

In 69 the 3970010 block was used for 302, 327 and 350's. Same 4" bore, different rotating ***emblies.

 

It should be a 4 inch bore block but as someone else said it could be a 302/big journal 327 or 350 depending on the crank and yes they do come with both two and four bolt mains.

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The "TXD" is the main clue as to it,s origin....

 

Yes, TXD is '75-'77 350 Conv. Cab 165 horse 4 bbl used in C-20 to 3500

 

I just got one of these short blocks but mine has TYZ at the beginning which if I remember was a 75 truck 165 4 conv cab, mine was a 4 bolt main.

 

If you can get access to an old Motors or Chilton manual, there were listings with those numbers to tell you what car, engine and the ****** that came with it. I believe if you are looking for a 327.....it would be from 1962 up to 1969 I think was the last year....all 2 bolt main blocks. Good luck hunting

 

At any rate if the block is in good shape it should be a good base to build a strong engine with.
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http://www.chevymania.com/


Code Year CID Vehicle HP RPO Trans Carb Comments
TXD 75 350 Truck 160 LS-9 Manual 4-Brl C-20 & C-30
TXD 76 350 Truck 165 LS-9 TH 350 4-Brl C-20 & C-30
TXD 77 350 Truck 165 LS-9 TH 350 4-Brl C-20 & C-30

 

Ain`t that the truth...

 

kinda old thread....but this partial VIN shows that it's a 1977 Chevy truck engine from a truck that was ***embled in Janesville WI.

C means Chevy truck (1 means Chevy car, T means GMC, 2 means pontiac, etc)
7 is the last digit of the model year, but starting 1980 they switched to letters
J is the ***embly plant
163823 is the last 6 of the VIN