got a sb with 1971 727, trans go shift kit, bolt in sprag. 9.5" converter ect.. ect.. when in drive it shifts from 1 to 2nd at about 15 and to 3rd at 20 with normal throttle. when floored it shifts at about 4,800. carb is a holley with the right bracket and downshift linkage, at full throttle the linkage has the trans line psi bracket all the way back. any ideas?
