aftermarket piston

[ACracin300ex]

i am reubuilding the top end on my 300ex. It was bored once .40 over, but i am wondering waht to do. I can put the .60 over in, get a 313/330 kit? or do a highcompression piston? i am leaning toward the highcompression piston, b.c i dont have a lot of $ laying around. Do u have to run 93 octane with a highscompressinon piston? tha nks a lot

[ACracin300ex]

i also have an aftermarket cam, port and polish work, oversized valves, dg header and pipe. i want the most power, for the least money, im cheap:devil

[YZROOSTINYA]

i run ninety tree

[ACracin300ex]

would i have to with a highcompressio piston? where and how much could i get one for? im looking like 12 or 13 sumthin to 1 thanks

[Razorback]

If you go over 11:1 CR, then you're probably going to need to run a higher octane than 93. Probably a mix of 105 or 108 and 93 would work ok.

[Mr_Bub400ex]

im not gonna go higher than 10.8:1 on pump 93