Thanks for the Powell machine recomendation.
Where would a person find the specs for the factory cam?
I have gone through the GM heritage site and my 1958 pasenger car shop manual qith 59-60 update.
This is what I have found.
Valve lift int/ex = .3275
Intake Timing
open 16 °BTC
close 48° ABC
Exhaust Timing
open 46° 30` BBC
close 17° 30` ATC
as well as journal sizes.
Couple more questions.
From the intake timing numbers, do the show both intake and exhaust being open together from 46° 30` to 48° ?
I know this 17° is 17 degrees. What is this 30`?
Thank you.
