Couple more questions I just thought of. Any idea which version of the 270 head would be the right choice for me? Titanium retainers? The 1.55 Springs say good for .680 lift. Would that work with my .660 solid roller? Or do I go to the 1.56 with titanium retainers? Says there good for .700 lift? Also I am running a 75 cc chamber on my stage 6 heads and these are 78. Any idea what the easiest way to get the compression back up or higher? I have previously been running the Felpro 1009 head gaskets .039 Thickness.


Thank you everyone for the help. I have been wanting to replace the old stage 6 heads for a long time so I am excited I actually can. I tried to buy a set of Indy 440-1 off of Facebook page and got scammed out of $2200 a few months ago so I have been working late nights in the shop at home trying to get my money back together. Two months of after hours work in the shop that the guy scammed me out of. I decided I better just buy new and the 440-1 are more then I can afford new.