Anyone want to decode this sbc?

Casting numbers are: On the back side of the block behind the distributer
3970010 And on the passenger 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 button 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 assemblies.

 

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 tranny 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 assembled 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 assembly plant
163823 is the last 6 of the VIN