My 2003 496 HO block cracked last year during a cold snap. It only had 60 hours on it. GM stopped making the blocks. Does anyone know where I can purchase a new 496 block? Thanks.

I'm just looking for a new bare block.

Just a question...Closed cooling system and pure water in it?

I don't know what your looking to spend, but; Dart makes a 496 block that has a thicker casting, that won't break the motor mount pads off.

No it had factory antifreeze but it came from California. I'm guessing they ran the antifreeze on the weak side. Still my fault for not checking the temp.

Check you local salvage yards look for a burnned o rebiuldable motor ,Im in pgh. pa I have 3 ,If you cant find one call me

What are you getting for bare blocks with main caps etc? Or rather, what do you have and what are you asking?

timing cover, oil pan, pick up, ...

heres some..

http://detroit.craigslist.org/wyn/pts/1580693274.html

http://phoenix.craigslist.org/cph/pts/1603468297.html