i'm building a 31 chevy pickup for a daily driver. i'm pulling all the old drive train out and going with a 235 and a t-5 trans. i swaped the axels for a 53 pickup in the front and a 92 toyota 4x4 rear. this way i'll have hyd brakes and 6 hole wheels, and should be able to use my 6 hole stock wires. what i would like to know is. how much can i mill off the head to raise the compression to around 8.5-1 or 9-1. i would like to build a milage motor, so what should i do to get the best gas milage. would a mild cam grind like a tork grind help. let me know what you think
