

B&M 20234 Adjustable Vacuum Modulator
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Donald R. Woods SR.
Greater than one weekeasy installation, works great
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Nunya
> 3 dayMy TH400 in my classic Jeep was shifting to early. I replaced this and used the screw to adjust this shift point to get the later shift I was desiring. Worked perfectly.
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Stone
> 3 dayIt worked as advertised.
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Maddog
> 3 dayGreat
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Brad A
> 3 dayFit perfect and works awesome to firm up the shifts on my 1975 jeep wagoneer with a th400 transmission. The factory setting on this is really close to what I️ wanted but I️ took it in two more turns to get it to hold the gears for a bit longer. Very, very happy with it.
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Charlie swoboda
09-06-2025Easy to adjust and let me set the shifting where I wanted it
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nancy merchant
> 3 dayeasy install
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Boom
Greater than one weekExactly as described. Fit perfect and installed easy.