what engine is this
Likely 2002-ish LM7(5.3) or LR4(4.8). I believe the 706 heads are referred to as "Castech" (company that mfg them) and some or all are prone to cracking. Search "castech 706" and judge for yourself. Here is a link to a sheet of casting numbers from Summit. It indicates 2002 but there is plenty more info out there to verify with.
https://summitracing.custhelp.com/ci...974/1164656520
Good luck.
https://summitracing.custhelp.com/ci...974/1164656520
Good luck.
They stamp the VIN on the block? I don't know exactly why but somehow I was convinced that wasn't the case. I guess maybe I assumed not since everyone is always chasing casting numbers.
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