I have a 2003 Silverado, 5.3L with Castech 706 heads. Driver side head is cracked (Thanks Chevy) at the rear mounting bolt in the oil drain (pic attached). I am aware of this TSB:
and have read a bunch of threads on various boards dealing with the issue. I want to replace both of the heads with non-Castech heads and have been searching for a while but all re-manufactured heads I have found are Castech (since there are so many bad ones). Does anyone know where I can find non-Castech re-manufactured heads?
Also, this is my parts list so far. Any additions?:
#89017252 5.3L/4.8L Complete Head gasket kit
#12498545 Head Bolt kit
New exhaust manifold collector(?) gaskets
I also wanted to replace the bolts that hold the exhaust manifolds on since they seem to break. Should I do this? Any recommendations?
My truck is in pieces and I need to get this resolved quickly. Worst case is to get one re-manufactured Castech head and put it back together but I would really like a long term solution to the problem. Any other ideas? Thanks