If the modulator is on the right side of the transmission, it is a TH400. I have never seen a TH400 with a cable. The TH 350 has the modulator on the rear of the transmission, and does use a cable.
Bob


55 Cameo 396 TH 400 with overdrive
65 Caliente conv
67 BB Caliente conv
67 Mercury 1 Ton
76 GMC 3/4 ton 454ci
84 Buick Turbo Regal