New cam and heads for original 273?

You guys are all on the right track. Your stock heads can be rebuilt and they cam be lightly ported or port matched to be more efficient. The 302's already have hardened seats so you're good for todays unleaded fuel. There's lot of cams out there and mild is what you want. Like 273 suggested, a cam with duration no bigger than 260 will work fine. I would also suggest pulling the pan. (thanks Adam) Look at a couple bearings and clean or replace the oil pump and pick up as needed. Let us know what you find. tmm