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.
1966 Chevrolet Biscayne 7.0L Eng, Automatic Trans, Trans Mfr CD THM400FACTORY OEM SERVICE PROCEDURE
Model Identification: Capacities
CAPACITIES
| Crankcase | (All Except 427" Corvette) | (1) 4 Qts. | |||||
| (427" Corvette) | (1) 5 Qts. | ||||||
| Water | 283" | (2) 15 Qts. | |||||
| 327" | (Except Corvette) | (2) 14 Qts. | |||||
| (Corvette) | (2) 15 Qts. | ||||||
| 396" | (2) 22 Qts. | ||||||
| 427" | 390 HP | (2) 21 Qts. | |||||
| 425 HP | (2) 22 Qts. | ||||||
| 3-Speed Synchro-mesh | 2 Pts. | ||||||
| 4-Speed Synchro-mesh | 2 1/2 Pts. | ||||||
| Overdrive | 3 Pts. | ||||||
| Powerglide | (Refill) | 3 Pts. | |||||
| (Overhaul) Air Cooled | 17.7 Pts. | ||||||
| (Overhaul) Water Cooled | 20.1 Pts. | ||||||
| Turbo-Hydra-matic | (Refill) | 8 Pts. | |||||
| (Overhaul) | 19 Pts. | ||||||
| Rear Axle | 4 Pts. | ||||||
| Fuel Tank | (Except Station Wagons) | 20 Gals. | |||||
| (Station Wagons) | 23.8 Gals. | ||||||
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Factory Service Tools
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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.
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