Ls1 help

[Calvin C.]

I have a LS1 motor that I want to put in my 90 vett. Can anyone tell what year car this engine came in or what year it was made. On the back of the block near the bell housing on the right side it has the following engraved 9802510:112 and on the other side it has the number 12550592 m cast in the alluminum. thank you if you can help.

cal

[Joe L.]

Re: Ls1 help

cal-----

The GM #12550592 casting number was used for 1997 through 1999 LS1 engines.