225 Porting

Ok, the intake needs opened up where the floor & guide-boss are close, namely shorten the guide about .200" with a 5/8" dia. spot-face/counterbore. Then remove the boss on the roof up to the guide, leave a square edge if these are the guides to be used. Next, blend the ORIGINAL spot-face out to the pocket, only put a radius on the new spot-face, short of the original on the long side, do not try opening it anywhere near the orig dia. or you'll get wet! Then get the port as wide as you can safely there, l've done 1.5" there on a peanut head, walls about .380 in, & .750 out from the stem. The valve-job, & short-side (keep as much as poss.) should roll into the floor, with about a .550" rad. Lay the floor down from there towards the intake. Nice & smooth....