LS1 head question
#1
LS1 head question
I have a 2002 Avalanche with the 5.3 small block. It looks like I might have a set of those Castech heads that have a history of cracking. I was told on the Avy forum that LS1 heads will work on these engines. The question I have is that I have seen some with 806 casting numbers and some with 853. What is the difference? Which set is better? Anybody on here close to Seattle that has a set they want to get rid of cheap?
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