engine code ?

[gotchamel]

New member here.I will fill out a bio soon.I just bought a 69' C10{after a 5+ year wait}and am trying to determine what engine it has in it.Its a V8 Cheverolet,the serial # is V0721U5.I understand the V0721 but cannot seem to decode the U5.I have used several sites but can't figure out the U5 in the serial #.Hopefully someone can help,thanks in advance.I will post some pics soon,I am fired up about this truck!

[68gmsee]

Welcome to the site...

A big Howdy, from Texas.

What did you find out about the V0725 code? I'm not familiar with it. What part of the engine did you get it from?

Also, is it possible the U5 may be US??? Sometimes those stamped numbers are not very clear.

[gotchamel]

Originally Posted by 68gmsee

Welcome to the site...

A big Howdy, from Texas.

What did you find out about the V0725 code? I'm not familiar with it. What part of the engine did you get it from?

Also, is it possible the U5 may be US??? Sometimes those stamped numbers are not very clear.

The serial # I found was on the passanger side on the block just forward of the head on a flat machined surface. The V= Flint plant the 0721= production date of July 21 but I can't find a code for the U5.I also thought it may be a S instead of a 5{which would mean a 307 out of a Caprice}but its easy to read and its a U5.Thanks anyhow.I will keep researching in the meantime maybe someone is more familiar with the codes than I am.Thanks.

[Lee H]

There should be more numbers on that pad, if not it probably was decked and those numbers were stamped by someone. Let us know what the block casting number is, rear deck behind the head, and the date stamp on the opposite side.

[gotchamel]

After finding a casting number{driver side near bell housing}looks like I have a 69-73 307 rather than a 350.My fault for not researching it futher before the purchase.Who knows maybe its the orginal engine,I'll try to check and see.Thanks for the help.