Decode engine block 3970010 !

[Gary S]

All Txx codes are truck codes. TBC was used in 1970 on 1/2 and 3/4 ton trucks, and again in 1979 on 1/2 and 3/4 ton trucks.

 

[dkcamaro]

i have a chevy motor with the casting #3970010 and the prefix # off the front pad behind the altenator is v0616tbc does anyone know what this motor would be?

Code Year CID Vehicle HP RPO Trans Carb Comments
TBC 70 350 Truck 255 LS-9 Manual 4-Brl C 10 & C 20, 4X4
TBC 71 350 Truck 255 LS-9 TH 350 4-Brl All Models
TBC 79 350 Truck 165 LS-9 Manual 4-Brl


You have to check your casting date on the passenger side bell housing flange

 

[70COPO]

Some 010 date castings were low under the exhaust manifold side of the block on the Passenger side.

 

[Itsadryheat79]

I have a 79 Z28 casting 3970010 "4blt main block" (third rebuild is underway).
VIN is on the pad so it's the original block.
The engine code above the vin says K0601DRH

K = St. Catherines, Ontario (McKinnon Industries Canada)
06 = June
01 = 1st day of the month
DRH = 1979 350 auto LM1 170hp 4bbl
http://www.nastyz28.com/gm-chevy-codes/chevy-engine-codes-suffix-4.php

 

[billys68SS]

I just bought a 65 Impala with what was told to me to be a 350 4bolt. I've checked mortec and other websites, but not able to completely discern the info on the front pad.
The casting number is a 3970010
And the pad numbers are as follows:
T1014CKH7
17D427134
Can anyone shed light on this for me?

 

[Gary S]

CKH code was used in 1973 and 1974 on 350 in many cars, but those engines would not likely be 4 bolt main blocks. You won't know until you get the pan off some day.
http://www.nastyz28.com/gm-chevy-codes/chevy-engine-codes-suffix-2.php


The VIN on your block however doesn't match a 73 or 74 engine. It wants to be a 1977 engine as the second digit is a 7. CKR would be a 1977 engine. Is it possible that the H is really an R?
The D in the VIN says the car was built at Atlanta and I don't have a listing of the cars Atlanta built in 1977. As late as 1975, they were building Chevelle and other A body cars.

 

[Mattmoore388]

It's a 350 out of a truck. You have a damn good block to start with if you ask me.

 

[TJ805]

Just bought a 73 K10 with what I believe to be a 69 Z28 motor. Block is cast with 3970010 and stamped VC918TJD. Anyone able to confirm? I bought truck thinking it was original motor, but was way more excited earn I saw these numbers...

 

[COPO]

TJD 1974 350 160 hp 4 bbl

 

[TJ805]

TJD 1974 350 160 hp 4 bbl

Thanks for the info. Not what I hoped. Just your run of the mill small block, I guess. I just hope it"s a 4bolt...