5-Speed Gearbox Sprocket 17T. Triumph all 5- Speed 650cc 650V Twins 1964 on and all 5- Speed Triples Unit 750cc 750V TR6V, TR7V, T120V, T140V T150V, T160V fits all Gearboxes with Engine No. ending with V without V it is 4-Speed Gearbox Made in England Chain 110-056-... Chain 530 5/8" x 3/8"
5-Speed Gearbox Sprocket 19T. Triumph
all 5- Speed 650cc 650V Twins 1964 on
and all 5- Speed Triples Unit 750cc 750V
TR6V, TR7V, T120V, T140V
T150V, T160V
fits all Gearboxes with Engine No. ending with V
without V it is 4-Speed Gearbox
Chain 110-056-...
Chain 530
5/8" x 3/8"
Made in England
5-Speed Gearbox Sprocket 22T. Triumph
all 5- Speed 650cc 650V Twins 1964 on
and all 5- Speed Triples Unit 750cc 750V
TR6V, TR7V, T120V, T140V
T150V, T160V
fits all Gearboxes with Engine No. ending with V
without V it is 4-Speed Gearbox
Chain 110-056-...
Chain 530
5/8" x 3/8"
Made in England
44887
G12. 1966
T264
T6846
20666
The Drive side case is from a Model 7 500CC engine. The Stamping G12 and engine number 44887 would suggest this as being from a dynamo model as manufactutured in 1952. See attachment. The Timing side case is from a later non-dynamo engine. Probably from an alternator Model 88 or 99 manufactured 7 to 9 years later. It would be quite difficult to build this engine into a 750cc motor as that would require extensive modifications.
The Norton factory always stamped both cases and sometimes the Timing Cover with the same number. On the Drive case this would be inside just above the bearing. On the Timing case it is outside usually just above the half timing pinion shaft.