Race Gas or Pump Gas?

[leeindubois]

I just now bought a 2006 arctic cat factory mod 600. I am going to pick it up tomorrow and I want to know if I should continue to run race gas in it or if I should spend the money and buy the heads so it can run on pump gas (91) octane? If I switch to pump gas will I notice a major difference in performance. Right now i think it will be better to change the heads because the cost of race gas is so expensive. Also if anyone knows the cost for 55 gallons of 110 octane currently that would be helpful.

Thanks,
John

 

[leeindubois]

ttt

ttt

 

[TheBreeze]

head

I would talk to speedwerx, and find out the compression of the race gas heads. They are race gas "sealevel" heads. You may be able to get away with pump, or a sight blend riding at 9000+ feet. I do not know this to be a fact, but worth checking into before spending the $$$.