67 Barracuda Notch with 273

To simply jack the base timing up to about 16 degrees BTC requires a dial back timing lamp and you'll need to reduce curb idle. Leaving the vacuum spark advance disconnected makes a difference too but... advance curve throughout rpm range gets more complicated than that. If yours is anything like mine, the OEM distributer is well worn. Point dwell is varies all over the scale. So sure, play with it. Can't hurt to just jack it up until it pings under load then back off a couple degrees. Then you can start researching electronic ignition options and advance curves.
It wont ever be a tire cooker without more cam, exhaust, gear, but there is a little bit more to be enjoyed without forfeiting the highway friendly gear.