what can i expect to gain/lose if i swap a 2015 LS3 int for a 2011 L9H int ?
looking to move more upper RPM power and drop some low end
will prob need a retune, air and fuel flow will be diff.
Comp cam- 210/224 .556/.568 114 LSA 105C/L 1500-6500


this was my first pull after making adj, got a litte better latter on

 

You'll probably lose a little down low and gain a little up top. By how much I couldn't say....

 

Thanks, that what i though, just what i want it to do. to much low end.
i think i am going to put a set of 1.8 rocker arms on to raise the cam lift
for a little more power., should give me around .600 lift. i think the PTV
should be ok.