bigdan1

yes ,I did lots of research

Just want to be absolutely sure that the

LS6 243`s have the same 210cc/75 casting then the 5.3 L33 243`s ???

I know that the valves & springs are different but all I need to start is the castings .....


So are they the same ?


thanks

Dan

thunderstruck507

iTrader: (18)

yes, other than the springs and valves they are the same

the 799s are also basically the same just a different casting process

bigdan1

quite strange that a 4.8 L head has the same flow caracteristic heads ( 210/75) then an LS6 ...........

96capricemgr

iTrader: (1)

Not strange just began using a good part on a larger number of vehicles later on.

bigdan1

what final CR should I get by putting some 243`s on an LQ4 ( stock )

let`s say with fel pro .041 gaskets ....