JPC Racing Stage 1 TH400 Swap Package (2005–2014 Mustang GT)
At JPC Racing, we make transmission swaps simple. Typically, these projects involve a lot of guesswork, wrong parts, and fabrication headaches. With years of hands-on installation experience, our in-house team has developed complete, proven swap packages that eliminate the hassle and take out all the guesswork.
Our Stage 1 TH400 Package features a TH400 built by Proformance Race Transmissions, rated for 850 horsepower — the perfect entry-level setup for racers who want reliability and performance.
This transmission includes:
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Transbrake valve body
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Direct drum modified for instant transbrake release
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Clutch packs and unit end play clearance optimized for “low drag,” friction-free performance
Package Includes:
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Proformance TH400 Transmission
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Neal Chance Torque Converter – custom spec’d to your application
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SFI Flywheel (8-Bolt)
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SFI Bellhousing (pre-mated to the transmission)
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Flexplate Bolts
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Transmission Mount
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B&M Transmission Cooler with fittings and 23 ft of cooler lines
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Hurst Shifter
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Custom PST Driveshaft with billet yoke
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Flexible Braided Dipstick
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ARP Converter Bolts
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All required adapters and mounting hardware included
Optional Add-On:
Upgrade with an AEM X-Series Transmission Temperature Gauge for accurate, real-time monitoring. These digital gauges deliver advanced functionality and high visibility:
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Auto-dimming sensor for ideal brightness
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87% larger programmable center LED
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Standard or metric display (100–300°F / 40–150°C)
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Selectable warning thresholds
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Peak/recall via face buttons
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AEMnet CANbus-enabled for EMS/data logger integration
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0–5V analog outputs for EMS/data logging
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33% larger face display for improved readability
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2-1/16" (52mm) housing, 0.825" slim depth
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Positive locking connectors for secure fit
Approximate Build Time: 2 weeks
Trust JPC Racing for a fully engineered TH400 swap package that delivers reliable, track-proven performance with plug-and-play simplicity.
