I've got an 11:1 for my 2014 that I'm getting ready to install. Mine is good to run on pump fuel. As far as I know, anything in the 12 range will require mixed or race fuel. I dont have an octane range for ya but it'll be higher than pump fuel.Curious if anyone has installed a 12:1 piston in the new 700 motor yet. I didn't find much via a search, so here I am.
If so, what are your fuel requirements?
It might just take a bit longer for aftermarket support for those newer Grizz, especially since it's a new motor. If there's no kit yet, I'd do a higher compression piston and start there. You can always upgrade to a BBK later if you want more and something becomes available that's what I'm going to do.After an exhaustive search, no one makes a big bore kit for the 16+ grizzlies. Called Trinity Racing, who've sold their castings to millennium technologies. No luck. Maybe I should just put a 12:1 piston in and call it a day.