I picked up this bow and need info on brace hight for 1964 Kodiak Species 66" 40#. Thanks

It's common for these bows work in the 7.5" - 8.5" range, so probably best to start at the low end and twist up until it works best for you.

I have found that particular bow is scary accurate and shoots fantastic.  It works better for me at the higher end of 8.5" or even a bit more.

Thank you Blackhawk!