Head milling, trickflow 240

Two part question;
Anyone have an idea how much would need to be milled off my heads to take a 78cc chamber down to 74 cc.
Would you do it for an extra 0.60 of compression???
I'm waiting to find out how much it will cost. That will be a factor, since my intake will also need to be milled as well.
Thanks.
Two part question;
Anyone have an idea how much would need to be milled off my heads to take a 78cc chamber down to 74 cc.
Would you do it for an extra 0.60 of compression???
I'm waiting to find out how much it will cost. That will be a factor, since my intake will also need to be milled as well.
Thanks.
To me, it kinda depends where you would be at, compression wise, without milling. 7.8 to 1, sure, .mill the crap out of em, 10 to 1, uh, no. 11 1/2, gonna run on E85, okay.