I'm with BG on this one. Your new calipers are much larger than the wheel cylinders you replaced. It will take a little more effort to bleed the system. Make sure you keep an eye on your master cylinder resevoir; keep it filled while you're bleeding it so you won't get any air pockets in there again. Just a reminder, bleed the wheel farthest from the master cylinder first and work your way to the front. (i. e. right rear, left rear, right front, left front) Lastly, because you removed your anti-lock valve, just be careful when you have to brake suddenly. You may be so used to the mushy pedal feel and lock up from stepping too hard.