compresion ratio? What pistons should i order?

[smooth_criminal]

OK well i'm trying to have my wiesco pistons ordered before the day is over. Can What set should i go with.
This will be on for my LS with 18g turbo.

k541m81 will yield 8.3-8.6
K542m81 will yield 9.3-9.8

 

[posol]

go with the 42's.

8's are way too low

 

[reikoshea]

all i can say is

 

[hotrex]

best comp level is anywhere in the mid to low 9's id say, although i am guilty of 8.5:1 compression in my new built b16a....

 

[reikoshea]

well use what you can get, but if you have the choice and the money to back up your choice...id go for the 9.5

 

[evosol]

I didn't notice a significant difference when going from 9.8:1 CR to 8:1 CR on my ghetto low comp build.