my Low dollar 318 hop-up project

There was a guy years ago that had a 70's nova with a 307, people said why don't you get a 350. He would say why when I already have the 307. He put headers on it a 4 barrel carburetor and hei distributor and gears and he had a blast and it didn't cost him a fortune.
307 has a slightly smaller bore and stroke than a 318. here's a 506hp 307/311, nothing to magical about the build.

Long Rod Chevy 307 = Big Power