just done a head swap on my buddys 95 camaro , mods are 355, hotcam,1.7rr,s boltons , he had the old heads gasket matched to the intake and thats it , new heads are cnc ported 195 cc intake, bigger valves , problem is it seemed to lose power and really slugish could these heads not match up well with this setup maybe or need tuned ?? anyone had this problem after a head swap?

 

is it tuned for the changes

 

oh didnt read that last part, yes it def needs a tune

 

would these heads throw the tune off that much??