TA63

iTrader: (5)

Which engines came with the hollow/sodium filled valves? Only the LS6? Or would a vette with the LS2 have them as well?

orangeapeel

iTrader: (18)

As far as I know it was just the 243 heads that had them.

TA63

iTrader: (5)

Yeah, but Im pretty sure not all 243 heads have them. Any easy way to identify these valves?

brian_rs/ss

yeah if i'm not mistaken it was only the c5z's that had the sodium/hollow valves. i may be brain farting but i can't think of another...


edit: can't remember if the cts-v's had them or not.

SS4Luck

iTrader: (10)

pretty sure it was only the C5z's. Ive never heard them mentioned when dealing with the CTSV

orangeapeel

iTrader: (18)

The ones that generally came on the "LS6" block have them. So yes, the C5Z.

Darkman

iTrader: (2)

The 2005-2006 CTS-Vs with LS6s did come with 243s with the hollow/sodiium-fliled valves.

raven154

iTrader: (14)

What Darkman said. The 243's obviously came on the LS6 and the LS2 but the only heads to get hollow/sodium filled valves were the ones bolted to the LS6 including the 04-05 CTS-V. The 06-07 had the LS2 and they did not have the hollow/sodium filled valves. So if you find a set off a V, find out for sure what year they came off of. I do not know how to tell the difference just by looking. I have a set of the hollow valves in my garage that are bad. I broke a rod and kissed a piston. Found a whole set on here brand new for less than one valve from the dealer. I can tell you they are ridiculously light.

LS-240

since we're on the topic, anyone care to touch on how much more the sodium valve heads go for compared to the regular 243s? $500'ish?

disc0monkey

iTrader: (10)

im running them and i just weighed them. scale doesn't lie. they are very light, def helps the springs last longer if nothing else.