These are the known mechanical and performance specifications for your 1946–1947 Royal Enfield Royal Enfield Model CO 350.
Basic Specs

Engine
Displacement350cc
Typeohv single
Details350cc ohv single
Max RPM
Compression
Bore/Stroke
Valves/Cylinder
Fueling
Ignition
Exhaust
Lubrication
Cooling
Chassis
Frame Type
Rake
Trail
Front Suspension
Front Travel
Rear Suspension
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance
Wheelbase
Dry Weight
Wet Weight
Wheels & Brakes
Front Tire/Tyre
Rear Tire/Tyre
Front Brakes
Front Brake Diameter
Rear Brakes
Rear Brake Diameter
Wheels
Comments
Post-war Production: A rigid-framed girder-fork wartime model (WD/CO), put back into production briefly post-war to fill a need for transport and all the machinery and a lot of parts were still available for this model.