What year is my LS1 engine????
Here is what I know.
The main head bracket has p/n 12561584
My heads are 241 models
They have center screw valve covers.
The intake has the waffle board bottom to it, so I assume it is not a LS6 intake.
The only number I see on the block is on a sticker that has a bar code. Is this the number I need for additional id?
Thanks
https://ls1tech.com/forums/generation-iii-internal-engine/239557-help-ls1-identification.html
Going to check that out tonight!!!!!!!!!!!


