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.
1973 Chevrolet Nova Base, Not Available, 5.7L Eng VIN T, Not Available TransFACTORY OEM SERVICE PROCEDURE
ROCHESTER 2GC & 2GV 2-Barrel
- ROCHESTER 2GC
- ROCHESTER 2GV
- Carburetor Identification
- Description
- Adjustment
- Idle Speed & Mixture
- Float Level (Metal Float)
- Float Drop (Metal Float)
- Float Level (Plastic Float)
- Float Drop (Plastic Float)
- Accelerator Pump
- Choke Rod (Fast Idle Cam)
- Vacuum Break (2GV Carbs)
- 9 Vacuum Break (2GC Carbs)
- Intermediate Choke Rod (2GC)
- Unloader (All Models)
- Automatic Choke (2GV Carbs) (Choke Coil Rod)
- Automatic Choke (2GC Carbs) (Choke Coil Rod)
- Overhaul
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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