Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC1972SPRINT CUSTOM, 6.6L ENG VIN EREPAIR AND DIAGNOSISENGINE MECHANICALMECHANICALTUNE-UP - V8ENGINE IDENTIFICATION
1972 GMC Sprint Custom, 6.6L Eng VIN E
Engine Identification
1972 GMC Sprint Custom, 6.6L Eng VIN ESECTION Engine Identification
Engine Code letters are suffix of Engine Identification Number. Number is stamped on pad on front right hand side of cylinder block.
| Application | Code |
|---|---|
| 307" Man. Trans. | TDA, TDB, TRA, TAD, TJR, TJT, TJX, TDT, TAK |
| 307" Auto. Trans. | TAL, TDL, TDP, TAH, TAJ, TJP, TJS, TLP, TDX, TJW |
| 350" Man. Trans. | TBL, TFH, TDD, TDG, TRK, TRH, TLD, TLW, TFA, TDW, TRD |
| 350" Man. Trans. LPG | TDH |
| 350" Auto. Trans. | TFD, TFJ, TDJ, TDR, TRL, TRJ, TLX, TFB, TDY, TRG |
| 350" Auto. Trans. LPG | TDK |
| 402" Man. Trans. | TKA, TKW, TKM |
| 402" Auto. Trans. | TKB, TKX, TKM |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.