4age rally cams

[gtjohn]

hi guys;

i have come across 2 rally camshafts for a 4age 16v engine that i got from a mate years ago he had tried them in his rally ae86 but could not get the engine to run right on them

the cams have no part numbers stamped on them
but the the have 8.5 gpa stamped on the rear face of each cam
i take it that this refers to lift what is the best way to work out duration

i am currenty rebuilding a silver over graphite uk car with 72.000 miles for the road and planning on using a martelus R1 4 branch and system

is it possible to run these cams with std engine with some head work/porting and polished

thanks john