s1ck s0n

iTrader: (7)

would valve seals cause any loss of power?

chrs1313

iTrader: (24)

Check out the 5.3 stg 2.5 PRC heads from texas speed, they are a great bang for the buck heads…my dad uses those on his H/C/I car running 10.40s at 127 with a MS3…I can’t remember the CC though, might wanna give them a call or try a search…

blueshark123

iTrader: (51)

If oil is getting into the combustion chamber then yes.