Basically the block is the same. Some changes were made such as the rods, but mostly identical.

I would think black RTV is fine.

 

oh ok cus when i removed the oil pan, i noticed it says Series II on the block, just under the heads.

 

Very well could be the same.

 

probably lol as long as i get it working in my monte

 

OH, you're KILLING ME!!! LOL! We have to wait until NEXT WEEK!! That's so far away Frank!! LOL!

From what I know the RTV you want to use should work fine.

As for the block, the S2 and S3 are 100% the same block. To be honest their is barely much difference in a S2 vs S3. The aluminum UIM and drive by wire tb are the most noticable, some years had an aluminum oil pan..... 2005+ had forged connecting rods for improved durability vs the previous cast rods. OH and I believe the returnless fuel system.

Outside of that, the engines are interchangable (as your about to finish finding out). You will be the L26 master in a L36 world Frank!!

 

I try to match the RTV to what i'm using it on, and it always seems to work. Black for oil, red for coolant.

 

Lol thank Jason
What years did the S3's have the black valve covers?

Seems about right haha
What about the Gray one?

 

That one I don't know, but I believe those are just black plastic. Who really cares any ways, you're sporting awesome aluminum F-bod covers now!!

 

I was just curious haha and I know

Here's my new oil cap decal along with my UIM ones
Not sure if I should keep the "3800" though. Maybe I should've went with diff. Fonts let know what y'all think

 

maybe ditch the 3800?