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Bully Dog Transmissions for the Duramax Diesel
Duramax and 8.1 Liter Vortec owners needing more performance from the Allison transmission can step up to high performance transmission upgrades.
The upgrade includes and goes beyond the Allison Shift Enhancer by upgrading C1 through C4 clutch packs plus the main pressure and back flow valves. B... (more) Bully Dog Transmissions - Full Details
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| Chevrolet Duramax Diesel 6.6L - Up to 550hp |
| $3,557.54 |  | 153600 |
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