These are the known mechanical and performance specifications for your 1961 Norton Dominator 88.
Basic Specs

Engine
Displacement596.00 ccm (36.37 cubic inches)
Type
DetailsTwin, four-stroke
Max RPM
Compression7.4:1
Bore/Stroke68.0 x 82.0 mm (2.7 x 3.2 inches)
Valves/Cylinder
FuelingCarburettor
Ignition
Exhaust
Lubrication
Cooling
Chassis
Frame Type
Rake
Trail
Front SuspensionTelescopic
Front Travel
Rear SuspensionSwingarm -two plungers
Rear Travel
SeatDual
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 BrakesExpanding brake (drum brake)
Front Brake Diameter
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
WheelsSpoked
Comments