TH400 vacuum modulator (need one)

[Dexter Shark]

I need a new vacuum modulator. I went to the local AutoZone and they told me that it is unavailable. Will any modulator for a TH400 work? JC Whitney has one by B & M that will fit th400 trans, but the little nipple thing where the hose goes is on top instead of on the side like the original. Will that one work?

[Crazy_Jeepman]

They are the same no matter what vehicle they are in all the TH400 are the same. I just called my local Checker auto and they have them in stock and yes the B & M is also compatible and is adjustable. I would look for a new parts store if they told you that part is no longer available By the way Checker price was around $20.00 for it

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Making a Career Out Of Restoring My 1979 Jeep J10 360/T18/D20 44s Doing The Turning
And For True Adventure! Driving Daily, An Ugly 70 Wagoneer! Dauntless 350/Th 400/D20/44s. Posi In My Rear. The To Do List Is Longer Than The Wagoneer Is!!!!
http://images.andale.com/f2/116/106/4651773/990532060948_sigjeep.JPG

[JeepFreak]

If you still have the original modulator on your tranny then the new one will look much smaller. Some of the 400's had an extension for the modulator and you will need to remove that in order for the new one to work right. If you have ever seen the size of the stock modulator then you will see why they needed the extension.

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JeepFreak

[RudyC]

Yes Kragen had mine.
Did yours have the elbow?

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79 WAGONEER (SOLD IT, BUT WILL FIND A LESS RUSTY ONE LATER)
79 DODGE STEPSIDE, 318,HOLLEY STREET DOMINATOR INTAKE, 4BBL HOLLEY,TF727/275X16 GOODYEAR EAGLE GTS
pictures at:
http://albums.photopoint.com/j/AlbumIndex?u=1500380&a=11321052

[JRZ_DAD]

I went to the local Auto Zone and asked for a vac modulator for my 78 Chero with the TH400...they didn't have one for the Jeep but had one for the Chevy TH400...and it works great - no problems. It was a tad shorter than the original but everything else was just fine...

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"Jeepasaurus Rex"
Red(Rust?) 78 Cherokee Chief (all stock till it breaks)

[JeepFreak]

Yup Rudy the elbow is what I'm talking about. I removed the elbow and went with a straight TH400 modulator.

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JeepFreak

[RudyC]

Reason is the rod that that goes inside the tranny that the elbow connects to. My friends was either longer or shorter than the non elbow rod. Foget wat it was but we just yanked a junker rod with the smaller modulator. Ya the original was HUGE. Thats why it needed the elbow.

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79 WAGONEER (SOLD IT, BUT WILL FIND A LESS RUSTY ONE LATER)
79 DODGE STEPSIDE, 318,HOLLEY STREET DOMINATOR INTAKE, 4BBL HOLLEY,TF727/275X16 GOODYEAR EAGLE GTS
pictures at:
http://albums.photopoint.com/j/AlbumIndex?u=1500380&a=11321052

[tucsonrick]

autozone doesn't have older fsps in their computer.one guy even told me that jeep didn't make a wagoneer in'69.i now go to checker or merles.
tucsonrick
'69 Wag (mostly stock)

[JeepFreak]

I believe I got my rod from the local tranny shop. The guy just gave it to me.

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JeepFreak