04 tahoe 5.3 burning coolant

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Dec 12, 2014 | 11:11 AM

#21

04TahoeZ71

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Quote:

Originally Posted by scout2000

Relatively new Gen III owner. Just picked up a 5.3 out of a 2004 Tahoe a couple of months ago for a project I'm working on. 62K miles. After seeing this thread, I looked and saw that I had the 862 heads.

How do I tell if they are Castec or not?

I don't think Castech made the 862, but I'm a newb so........

Dec 12, 2014 | 11:17 AM

#22

JRENIGAR

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Quote:

Originally Posted by scout2000

Pull the rockers and stands off. Look under where the stands sit and if there is a little battery looking casting they are the Castech heads. Looks like a AA battery sort of.