{"title":"Automatic Transmission Modulators","description":null,"products":[{"product_id":"b-mth400-modulator","title":"B\u0026M Adjustable Vacuum Modulator — Fits TH350 and TH400 Transmissions","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout B\u0026amp;M\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eB\u0026amp;M engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full B\u0026amp;M lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/q5gDthhCs5M\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eTake Control of Your Shift Points\u003c\/h2\u003e\u003cp\u003eThe B\u0026amp;M Adjustable Vacuum Modulator is a must-have for anyone running a TH350 or TH400 automatic transmission. Unlike factory units, this adjustable modulator allows you to fine-tune your shift timing based on your engine's vacuum levels. Whether you are looking for firmer, later shifts for performance driving or smoother, earlier shifts for cruising, this unit provides the flexibility you need.\u003c\/p\u003e\u003ch3\u003ePerformance Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Tuning:\u003c\/strong\u003e Easily dial in your shift points to match your engine's power band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Specifically engineered for GM TH350 and TH400 transmissions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Shift Quality:\u003c\/strong\u003e Eliminates erratic shifting and improves overall transmission response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Construction:\u003c\/strong\u003e Built to meet or exceed OEM standards for long-lasting performance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you have modified your engine with a larger camshaft or intake, your factory vacuum modulator may no longer provide the correct signal to the transmission, leading to poor shift quality. The B\u0026amp;M Adjustable Modulator solves this by allowing you to compensate for lower vacuum levels, ensuring your transmission shifts exactly when it should. This is a simple, cost-effective way to improve the drivability and performance of your classic GM vehicle. Installation is straightforward, making it an ideal weekend project for any car enthusiast. Find all your transmission tuning components at GGCRACING and optimize your vehicle's performance today.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular B\u0026amp;M products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/b-mlaunch-control-kit\" style=\"color:#0066cc;text-decoration:none;\"\u003eB\u0026amp;M Launch Control Kit — Universal Drag Racing Line Lock\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/b-mlaunch-control-solenoid\" style=\"color:#0066cc;text-decoration:none;\"\u003eB\u0026amp;M Launch Control Replacement Solenoid — 1\/8 in NPT Universal\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/b-mfilter-extension\" style=\"color:#0066cc;text-decoration:none;\"\u003eB\u0026amp;M Transmission Filter Extension — For TH400 with B\u0026amp;M Deep Pans\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/b-mthe-edge-shifter-88-97-honda-civic-crx\" style=\"color:#0066cc;text-decoration:none;\"\u003eB\u0026amp;M The Edge Short Throw Shifter — Fits 88-01 Honda Civic \u0026amp; Acura Integra\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/b-mc-6-ford-cable-bracket\" style=\"color:#0066cc;text-decoration:none;\"\u003eB\u0026amp;M C-6 Ford Transmission Cable Bracket — Pan Mounted Steel Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"B\u0026M Adjustable Vacuum Modulator \\u2014 Fits TH350 and TH400 Transmissions\",\"description\":\"Fine-tune your shift points with the B\u0026M Adjustable Vacuum Modulator. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for B\u0026M?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the B\u0026M Adjustable Vacuum Modulator \\u2014 Fits TH350 and TH400 Transmissions?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. 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