i have a gsr block that i am going to be putting in my car. my car is turbo charged. the gsr block has b16 pistons in it. i want to get lower compression out of it. i have some LS pistons laying here. if i put those in there does anyone know what my compression might be close to. this is with a gsr head.

thanks guys for any help

 

jason you are at 10.2 approx right now with the b16a pr3 pistons in that setup if you go with ls you will be 9.5 approx with soem pr4 pistons but if you got acess to some b20z pistons it will eb aroudn 9.3

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18bturbo &raquo;</TD></TR><TR><TD CLASS="quote">but if you got acess to some b20z pistons it will eb aroudn 9.3 </TD></TR></TABLE>
b20z pistons are 84mm,he's using a 81mm gsr block

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1slowcrx &raquo;</TD></TR><TR><TD CLASS="quote">
b20z pistons are 84mm,he's using a 81mm gsr block</TD></TR></TABLE>

my exact words. why not just stick normal gsr pistons back in it?

 

i've got a brand new cometic HG that will help drop compression in a GSR...lmk if interested

 

just to answer the comments. reason i want to use the LS pistons is cause there are B16 pistons in it now and i have the LS pistons sitting right here. but what i am actually going to do now is use some wiesco pistons. 9 to 1
thanks for the posts guys