Bhawkins854
Member
I have about 25 thousandths clearance intake valve to pistons when I checked my squish. .I had to machine my relief pockets deeper with this 626 cam, and wider to accommodate the .060 oversized valves. I don't think I could get a taller cam in here, s&s doesn't recommend anything less than 25 thou piston to valve if I'm not mistaken. Not sure how everyone else gets such giant cams to fit in the 117? I can't remember how much material they machined from the heads and jugs but it shouldn't be anymore than usual, especially with a decently mild 10.5:1 CR. Maybe the cam selection is the difference