Found cam sheet supplied with Piper cam around 1978 that I fitted to my 591cc '550'
This was the 'Fast Road' cam
IO 30 deg BTDC
IC 65 deg ABBC
EO 70 deg BBDC
EC 30 deg ATDC
103.5 lobe center
With points it topped out around 11,000rpm, with electronic ignition, 13,500
With all the building going on I guess someone will be interested
