Octane Heads?

[octane83]

Im building my motor for my octane and i want to shave the heads. It will be a 777 with a little bigger piston but other than that and the head the internals will be stock. Anyone know any information on this or were i can go to get some. I need to know what the highest compresion it i can run on 93 octane and how much i can shave off the head for cc. Thanks for the help.

 

[cjbchopper]

I would just shave .020-.030 off the domes. I did it with good results. Should bump the compression a good bit, but can still run 93. Randy from Watcon always told me not to run much more than 175 compression on the polaris motor.

 

[TxPro1200]

my pro has .050 squish and 155 psi runs on 93 pump gas all day with around 28 degree lead tiiming,for what its worth

 

[octane83]

Thanks for the info i think i will go .050 then