{"product_id":"tci-automotive-adj-vacuum-modulator-63-73","title":"TCI Adjustable Vacuum Modulator Valve | GM Powerglide | 280001","description":"\u003cp\u003eThis TCI adjustable modulator valve is designed specifically for GM '63-'73 Powerglide transmissions. The vacuum modulator signals engine load so the transmission can set the proper line pressures and shift points, and worn modulators can cause drivability problems or premature failure. This new adjustable unit renews performance and allows part-throttle shift points and line pressures to be raised or lowered slightly by turning the screw inside the vacuum nipple.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFits GM '63-'73 Powerglide transmissions\u003c\/li\u003e\n\u003cli\u003eAdjustable part-throttle shift points and line pressure\u003c\/li\u003e\n\u003cli\u003eSet by the screw inside the vacuum nipple for more or less diaphragm pre-load\u003c\/li\u003e\n\u003cli\u003eReplaces worn, leaking or ruptured stock modulators\u003c\/li\u003e\n\u003cli\u003eFor the TH350\/400 valve, see 350001\u003c\/li\u003e\n\u003cli\u003ePart number: 280001\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat transmission does the TCI 280001 modulator valve fit?\u003c\/h5\u003e\u003cp\u003eIt is designed for GM '63-'73 Powerglide transmissions.\u003c\/p\u003e\u003ch5\u003eWhat can be adjusted with the 280001 modulator valve?\u003c\/h5\u003e\u003cp\u003ePart-throttle shift points and line pressures can be raised or lowered slightly using the screw inside the vacuum nipple.\u003c\/p\u003e\u003ch5\u003eIs there a version for the TH350 or TH400?\u003c\/h5\u003e\u003cp\u003eYes. The TH350\/400 valve is available under part 350001.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What transmission does the TCI 280001 modulator valve fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is designed for GM '63-'73 Powerglide transmissions.\"}}, {\"@type\": \"Question\", \"name\": \"What can be adjusted with the 280001 modulator valve?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Part-throttle shift points and line pressures can be raised or lowered slightly using the screw inside the vacuum nipple.\"}}, {\"@type\": \"Question\", \"name\": \"Is there a version for the TH350 or TH400?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The TH350\/400 valve is available under part 350001.\"}}]}\u003c\/script\u003e","brand":"TCI Automotive","offers":[{"title":"Default Title","offer_id":41296456613936,"sku":"DXKM_280001","price":35.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/TCI280001.jpg?v=1712740143","url":"https:\/\/berryperformancesales.com\/products\/tci-automotive-adj-vacuum-modulator-63-73","provider":"Berry Performance Sales","version":"1.0","type":"link"}