what heads to run on a 273

RedFish said
If what I've read is correct... All 273 heads had the same ( heart shaped buldge ) closed chamber design wheather dome top Commando pistons or not. A different dome top piston could hit something but I dont think The Commado pistons will.
I've also read that the adjustable rodker assemnlies from the 273 heads will tranfer to those 302 castings as well.
My memory sux though so stay tuned.
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You are correct. Lots of good info here. I would add that you shouldn't get carried away with bigger valves. With that small bore, you can easily shroud a bigger valve resulting in worse performance that if you kept the stock valves. Also, on the 302 head, you'll need to fill the smog port holes on the side or they will leak exhaust using the earlier manifolds.