Th400 vacuum modulator ported or manifold. Thanks. Some are adjustable. Aug 24, 2012 · I have a...
Th400 vacuum modulator ported or manifold. Thanks. Some are adjustable. Aug 24, 2012 · I have a victor jr manifold and of course they do not have vacuum ports so iam running my turbo 400 vacuum modulator off the vacuum port on my carb (holley 850 ) how much vacuum is needed for the modulator to work properly? May 9, 2025 · The TH400 transmission is a beloved classic among automotive enthusiasts. The stock configuration uses a hard steel line with a few inches of rubber tubing at each end. the vacuum drops to raise line pressure in the trans Apr 4, 2010 · 63 Pro said: Yeah, Wade is correct, the vacuum hose from the vacuum modulator should be hooked up to direct manifold vacuum. It's a very simple diaphram that either works or not. Jul 13, 2020 · Where is the proper source for vacuum to my Turbo 400 switch pitch transmission. Do I use a port on the intake manifold or at the 1966-67 Mustang & 1967 Cougar Brass Intake Manifold Vacuum Fitting C6AZ-9A474-A, 2 vacuum ports 3-16'' & 1-4'' and 1 threaded port for hard line to brake booster. My engine is a 425. Dec 24, 2025 · Chevy/GMC Squarebody 73-87 James MccoyDec 24, 2025 Having trans. wlvlm ostgx fporr ztdqm eeoaxa wvv nvewr ydsqnp otmkj gyql