Originally Posted by inquiring_mind2
I have a 427 bored 60 over I am going to switch to VP racing fuel. I was using torco blue 110 I am going to go to VP 113 which is oxygenated. I was told I would have to re jet my carb. Which is a 1050 dominator. I was wondering what is the easiest way to do this and has anyone ever used the oxygenated fuel from VP before?? Any help would be greatly appreciated.
My experience with this stuff is rather limited at this time, but from what I've see/feel the recommended increase of 1 or 2 jet sizes is a bit conservative, at least in the NW where temps are cool and humidity usually moderately low so air density tends to be high, it seems that a 4 to 5 percent increase in jet size is warranted which looks more like 3 to 4 sizes. But with unleaded fuels I like to run into just a bit of dirty exhaust.