milling heads for comp ratio increase

70Hardtop said
A good running 318 in Aust could be picked up for about $500. But most likely in another state. Our country is the same size as yours, and most stuff is over East. I am West coast. Shipping for that hunk of metal would run to about $300. Plus all the associated worries that go along with it. Is it as advertised? - lots of shonky crooks over here! How much extra $ would I have to spend on it? IMO the 273 is a sweeter and better engine than the 318 which we get here - a pissy 190 HP and cast crank. My 1967 273 I bought for $200 complete and running. I had a small solid cam and the adj rocker assy in my parts collection. It had a great forged crank that only needed a linish. It has light full floating rods and bores so good they cleaned up with a hone. And now mechanical cam 273's are getting very rare down under. It was no brainer - of course I want to use this fantastic little engine, not a common 318.

That's why I said if you were here. I bought a 318 last year with the video of it running from a very nice guy that is actually a member here for 50 bucks. I milled some 360 heads to bring back the compression of the 318 heads. But I gained Flo. I milled them 50 thousandths which cost a hundred fifty bucks. Didn't have to mill or touch anything else. It did a 14.4 in the quarter mile with a passenger in my Duster. My wife 66 Barracuda had a 273 with the adjustable rockers. I actually used a set of adjustable rockers from a 273 for my stroker motor. I have Hughes rollers now. My point was more towards displacement vs. expense. Kind of like a 318 would be an easy Improvement all the way around. Or I always think about how a 360 takes up the same space as a 273? How you could completely do every angle at making power with a 273 and Along Comes stock 360 that fits in the same exact spot with more horsepower.
I was actually hell-bent on making the fastest 318 ever made, but come to find out it was cheaper to stroke a 360 than a 318.
Not arguing what you need/want just food for thought.