Were Castech 243 Heads faulty, and did they ever come on a c5z06?
#1
Were Castech 243 Heads faulty, and did they ever come on a c5z06?
Hello all,
So many of us are aware of the castech 706 issues. I have 2 question sbecause I am looking at a used set of 243 heads claimed to be from a 2002 c5 z06.
1. Did any of the 243 heads from castech have issues?
2. Were 243 heads in a c5 z06 ever actually made by castech or is this guy lying and these are off an LS2 or truck?
Thanks!
So many of us are aware of the castech 706 issues. I have 2 question sbecause I am looking at a used set of 243 heads claimed to be from a 2002 c5 z06.
1. Did any of the 243 heads from castech have issues?
2. Were 243 heads in a c5 z06 ever actually made by castech or is this guy lying and these are off an LS2 or truck?
Thanks!
#2
11 Second Club
iTrader: (35)
I can't answer your question about the castech aspect but if the heads are truly off an '02 Z06 then they will have the lightweight hollow/sodium filled valves. These valves are unique to the '02-'04 Z06 only. Also, the hollow/sodium filled valves are a tad longer that the valves used in other applications. To know if it's a true Z06 head a valve would need to be removed and measured or weighed, I'm not aware of any other way to confirm authenticity personally.
#3
11 Second Club
iTrader: (35)
I was curious about your castech question since I have 243's on my Z and both my parents have 243's on their daily drivers. Found the GM bulletin:
http://ww2.justanswer.com/uploads/Bl...t_loss_5.3.pdf
Apparently the heads made by castech have a castech logo on them and the issue is primarily or inclusively involving the 706 heads and maybe even the 862 heads also both of which are found on some 4.8/5.3 engines. There is no mention of the 243 heads. I am not sure who produced the 243 heads but they don't appear to be a part of this issue according to what I am seeing online. Maybe someone else can chime in further.
http://ww2.justanswer.com/uploads/Bl...t_loss_5.3.pdf
Apparently the heads made by castech have a castech logo on them and the issue is primarily or inclusively involving the 706 heads and maybe even the 862 heads also both of which are found on some 4.8/5.3 engines. There is no mention of the 243 heads. I am not sure who produced the 243 heads but they don't appear to be a part of this issue according to what I am seeing online. Maybe someone else can chime in further.
Last edited by StealthFormula; 11-04-2016 at 11:09 AM.