Generation IV External Engine - Can anyone tell me cylinder head material ?
02-21-2012, 12:17 PM
I got a set of 5.3l 862 heads, I need to weld up an exhaust flange bolt hole (followed with drilling and taping it). Does any one know what type of aluminum gm used for the casting ? Thanks..
I'm gonna be using a tig. I'm just trying to figure out the BEST filler rod to use.
02-21-2012, 04:31 PM
Why not just helicoil the hole?...should be WAY less work.
I think it's probably something along the lines of an A356, but I don't know that for sure.
02-21-2012, 09:58 PM
The hole might have been so stripped out/destroyed TIG might be the only option.
02-22-2012, 02:31 AM
The heads are sand cast of 356 aluminum, heat-treated to the T6 specification.
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