Transmission:    AOD - 550

The second level of performance at SPT is the AOD-550.  This is the strongest TWO PIECE input shaft transmission we consider to be reliable.  It is fully rebuilt using E9 AOD cores we have available.  Each unit is fully inspected for wear, all gaskets and seals are replaced with quality new pieces, and final clearances are adjusted for performance use.

“Street / Strip”


- Pump and stator modified for increased cooler flow and lubrication

- 300M hardened input shaft (retains direct drive function)

  1. -A blend of Raybestose Performance Stage 1 and High Energy clutches (4 INT, 4 REV, 5-6 FWD, 6-7 DIR)

- All stamped steel updated drums with greatest capacity

- 2” Pro Series overdrive band

- A+ billet overdrive servo (greatest holding capacity)

- Updated accumulators

- Mechanical diode with improved snapring

  1. -Lube mods (force lubricated high heat or wear components for greater reliability and service life)

  2. -SPT-1 Series or R Series valve body (see Valve Body section for details)

  3. -Chrome pan with drain plug

- High-temperature aluminum paint finish

- OPTIONS (contact for details)

    - Wide ratio gearing +$

    - One piece input shaft +$

    - Tailshaft lube (suggested for numerically higher gearing) +$

    - Converter (prices vary by vehicle spec)

    - Cooler: 11” x 12” x 3/4” stacked plate +$

    - Temperature sensor +$


Valve Bodies: