FU_I_AM_UltraZ

iTrader: (20)

Okay getting ready to buy 2006 Z06 with 37K miles on it from private seller. He's second owner. first owner did mods and got rid of it. it has full exhaust, can't rmemeber the headers Kooks i think and corsa cat back. not sure if tuning or anything else done to it. I know there has been ppl with springs or valve problems i read somewhere but not common thing. Need some info
Thanks

FU_I_AM_UltraZ

iTrader: (20)

also what are the casting numbers on the heads and engine? Where can I find it on the block?

Danny

iTrader: (16)

The problem that some owners have had were the stock valves breaking during high RPM usage. The hallow valve would break where the head meets the stem.

WKMCD

iTrader: (2)

If you're tyring to make sure it's an LS7, the LS7 intake is very easy to identify. It only fits LS7 heads which require a 4.125 bore. If you know what it looks like, you can identify it from 20 ft away.