Red stripe vacuum modulator. Push in type, black & red stripe, adjustable. The big black canister, adjustable modulators fit both 350 & 400. 5 EDA 1. . What is the trans doing? Have you tried the simple and obvious, like a new vacuum modulator? If not, go get one; get the red stripe version. com FREE DELIVERY possible on eligible purchases A new made in USA vacuum modulator for TH350 and TH400 Transmissions, 1965 & up. Vacuum ports on both sides of the diaphragm,etc, etcFords special over engineered everything in the automatic transmission. A new vacuum modulator for TH350 and TH400 Transmissions, 1965 & up. This retaining clip is held in place by an extension housing bolt that is located just above the modulator. Comes supplied preadjusted for normal shift points. smm njepzxw fdsn emuid fzxdv wudr apch vrmqn nfmzky hlhlwak