1967–1973 Mustang AOD Automatic Overdrive Conversion Kit
Part Number: TRA-670-401
Upgrade your 1967–1973 Ford Mustang from a stock C4 or C6 automatic transmission to a modern Ford AOD automatic overdrive transmission for improved highway cruising, performance driving, smoother shifts, and better overall drivability. This AOD conversion kit from California Pony Cars is engineered to make the swap straightforward and reliable on early Mustang chassis with Holley-style carburetors.
This kit is specifically designed for Mustangs equipped with aftermarket Holley-style carburetors to ensure correct throttle valve (TV) linkage geometry and transmission function when installing an AOD.
What's Included in the AOD Conversion Kit
The kit includes the essential components needed to complete an AOD conversion in a 1967–1973 Mustang:
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AOD transmission tubular crossmember bar assembly
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Transmission mount insulator pad to reduce vibration and improve drivetrain stability
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Driveshaft slip yoke to adapt the factory driveshaft to the AOD output
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Kick-down (TV) cable for proper transmission shift points
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164-tooth flexplate with 28 oz imbalance and 14.23 inch outside diameter (50 oz also available)
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AOD shift linkage rod that allows use of the original factory shifter lever
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Throttle return spring bracket
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Holley-style TV corrector to ensure proper throttle valve function with a Holley carburetor
This kit is designed as a matched set of components that minimize guesswork and reduce the need to source individual parts separately.
Engine and Vehicle Compatibility
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Fits 1967–1973 Ford Mustang
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Designed for small block Ford engines: 289, 302, and 351W
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Intended for use with Holley-style carburetors and AOD automatic transmissions
Why Upgrade to an AOD Transmission
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Improved highway fuel economy thanks to overdrive gear
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Smoother shifts compared to C4 or C6 transmissions
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Direct-"bolt-on" fit design engineered for early Mustang driveline geometry
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Retains classic interior look with original shifter lever retention
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Reduces engine RPM at cruising speeds for better engine longevity
This conversion is ideal for performance and street-driven Mustangs, long-distance cruising, and daily use where driveability improvement is desired.
Related AOD Conversion Kits
If your Mustang has a different carburetor type or model year, we also offer these related kits:
| Part Number | Model Year | Carburetor Type |
|---|---|---|
| TRA-656-402 | 1965–1966 | Holley Carburetor |
| TRA-656-404 | 1965–1966 | Edelbrock Carburetor |
| TRA-678-401 | 1967–1968 | Holley Carburetor |
| TRA-670-403 | 1967–1973 | Edelbrock Carburetor |
See other kits for Edelbrock-style carburetor applications or different Mustang years.
Additional Parts You May Need for a Complete AOD Swap
This kit contains most major conversion components but additional parts may be required based on your specific Mustang setup:
Recommended Supporting Parts:
Important Notes
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This conversion kit does not include the AOD transmission unit itself
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Vehicle condition, previous modifications, and drivetrain setup may affect installation
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Professional installation is recommended to ensure proper throttle valve and shift linkage function
Manufacturer Information
Manufactured by California Pony Cars with quality engineered components and backed by a Limited Lifetime Warranty, this AOD conversion kit is designed for reliable function and durability in classic Mustang overdrive swap applications.
