Whats the highest compression piston I can run with pump gas and a stock rod? Also, what company's piston will give me better perforemance with that compression?

 

Anyone know?

 

Well i had a 10.25:1 pistion in mine at one time and you could run off pump gas im not sure if you can go any higher than that or not. the 12:1 i have now i have to go to air port and get 111 octan. You take the 111 and mix 2 gallons of it with 3 gallons of 93 and it gives you around 100.2 octan and thats what i burn. what im running now pistion wise is a JE pistion. and wisco is a good pistion to just a little cheeper. Hope i help you out.

 

you can not get much higher compression for a raptor and run race gas, because it is reccomended that you run 91 octane. So if raise the compression and plan on running pump gas the gains will not be very beneficial