As I said earlier in they post, this is not a get by cheap repair. The hobby is starting to die out, we should count our selfs lucky for the parts we can still get.
I have never shopped for a 235 camshaft, but I'm betting there are not many variations available. Go hear,
https://www.blocklayer.com/degree-wheeleng enter your numbers from the Heritage site, it will figure duration and centerlines for you. This will give total cam spec's for the GM cam, new cams will likely use the " @ .050" " duration numbers which will be much shorter than the GM numbers. If GM gives minutes of rotation, they are giving you the total lift and duration from zero ( base circle ). Theres no way to figure out on paper the @ .050" numbers due to lobe design differences. They only way to know would be to check it with dial indicators and a degree wheel.
