S-10 block ID help

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Feb 5, 2022 | 2:31 PM

S10unknownblock

Thread Starter

CF Beginner

Joined: Feb 2022

Posts: 2

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From: Virginia

S-10 block ID help

Hi everyone.
I purchased an 89 s10 to put on the drag strip..
it runs fine, we just don't have an idea what kind of block is in it..
we found 2 numbers, stamped on top of each other.
VO613TXT
And
C73325046
Maybe someone can help me?
we think it might be a 265 block from 1955?
Thanks a lot

Feb 6, 2022 | 1:41 PM

73shark

Administrator

Joined: Apr 2006

Posts: 11,338

Likes: 194

From: KC, MO area

Welcome to the forum. Moving to the S-10 section of the forum where it will get more views as this is the Welcome New Members section. 😊

Feb 6, 2022 | 1:52 PM

73shark

Administrator

Joined: Apr 2006

Posts: 11,338

Likes: 194

From: KC, MO area

Have you tried using an online search engine for block ID help?

Feb 6, 2022 | 1:59 PM

oldchevy

CF Monarch

Joined: Apr 2012

Posts: 6,216

Likes: 438

From: Miami, FL.

I did an online search and found this.

V0613TXT
V for Flint
0613 for June 13
TXT for 1975 350
frwd cab LLS9 4 bbl
C20 to 3500

Feb 6, 2022 | 6:59 PM

73shark

Administrator

Joined: Apr 2006

Posts: 11,338

Likes: 194

From: KC, MO area

I believe that makes it a truck engine which would have a forged crank and 8" harmonic balancer. If it has a 6" harmonic balancer, then it is a cast crank.

Any idea what the restamp was for? Maybe a rebuilt engine?