69 350 250 or 300Hp motor?

[veener88]

For christmas we got some chevy books to help restore out 54 3600 and 69 c10. On the C10 we came across in one of the books that there was a limited amount a little over 28K of C10 that came with 350 that were 300HP instead of the 250. But my other books only shows 255 HP motors came in the truck. What the books did help me with is that I did not know there was a option sticker glove box ( I am just starting to restore this truck still learning). So I found that engine code option was 4LS9AA, with a 3.73 rear end a turbo trans. I am just wondering how can I tell what 350 is under the hood? Right now the engine is to coved in filth to get a good look at the stamp on the block and I can not even find the code for what one is what.

Thanks for any help on this.

[pound41]

On the right front of the block by the head there should be a flat stamping pad. you should find a 3 letter code if memory serves correct like TKE or something. Post the letters someone will help

[veener88]

I can not find it. I just went out to the shop and scraped the front of the block. I took off the Alt and did the front of both heads and the block over the water pump. I could not find a tag. I did find on the right head there was some yellow markings that looked to be 28 written on the head. But past that I could not find a tag. Can anyone help me locate where the tag should be? I did do a search and I can not if a picture to help me.

[larry may]

Look on the ledge in front of the right side head. Look down at the ledge . About 3/8 inch wide mabe 1/2 inch wide . A couple of letters mabe TO then three numbers then a suffix . Can look up suffix at nastyz.com.