Identifying LS Engine

[pontiacgp]

either way though you got a great deal....

 

[fleming442]

Silverados were also available in a 1500HD and there's a Vortec MAX in the mix. Could be one of them?

 

[rustydustydoc]

Just call the guy you bought it from and ask him

 

[motorheadmike]

865, 706, 317, 799, give me something to work with!

 

[565bbchevy]

865, 706, 317, 799, give me something to work with!

I couldn't find any numbers on the heads, it's an iron block there is a number on the back of the block but it is too obstructed to see that also.

 

[motorheadmike]

I couldn't find any numbers on the heads, it's an iron block there is a number on the back of the block but it is too obstructed to see that also.

It's right there:

 

[565bbchevy]

The heads number is 862 appears to be for 4.8 or 5.3

 

[motorheadmike]

Now the only ways to tell are read the ECM (assuming it is original to the engine) or bore scope a piston. Dished is 5.3, flat is the superior 4.8L.

 

[565bbchevy]

Now the only ways to tell are read the ECM (assuming it is original to the engine) or bore scope a piston. Dished is 5.3, flat is the superior 4.8L.

Read the ECM with a scanner or look for a number on it?

 

[fleming442]

I'm thinking you'll need something that pulls information from the VIN. A scanner will just report problem codes.