bugy

hello guys, i'm using 317 heads on my LQ9 with 11.0 rc, just this came to my mind if there's another better option of casting stock heads, thought about 243's but it seems there are similar only with chamber volume different, also checked out some threads about 317 vs 243 and found dyno test says 243's work a little bit better regarding manufacturer issues or something proved with same porting features and all of that, what do you say? would exist another option for this? just want to improve a little bit more in track.
any input is thanked in advance.

01 WS6 6.0

iTrader: (8)

Depends on what your goals are if im not mistaken the 243 is considerably smaller chamber which would bump up the compression also different valves if there of an LS6. What cam are you running and track times if possible?

garygnu

you could mill your 317s or sell them to some for boosting.

bugy

well, cam is: duration at .050 226/232 LSA=117
track time 13.5 seconds at 5500 feet above sea level
this is carburated with holley vacuum 750 CFM
just wanna know if there are some heads for this gen that apply better with same rc which is 11.0, it doesn't matter i have to mill them.
it is a s-10 truck.

bugy

heads from 4th gen would match on it? if it would which ones will work better for this set up?