SM Head Modifications on a budget
Ok I don’t want to step all over your post but I drilled a customer’s second head today and took some quick measurements. These are top to bottom. I will be opening these up to the tube but this is at .950 without touching the common wall so I don’t cheat myself out of more area I can gain when I work the common wall. You may not be able to see it but I had to go in the pushrod side over one inch to get my .950.
Ok I don’t want to step all over your post but I drilled a customer’s second head today and took some quick measurements. These are top to bottom. I will be opening these up to the tube but this is at .950 without touching the common wall so I don’t cheat myself out of more area I can gain when I work the common wall. You may not be able to see it but I had to go in the pushrod side over one inch to get my .950.