Best 273 and 318 builds (NO 360's please)

MuuMuu101 said
So, I've been told. I haven't priced out machining a crank, but I don't think you can get away with a 4" stroke in a 273 without major bore surgery. And I agree, pistons would be the high dollar item. We'll see what condition my engine is in when it comes back. With a 3.54" stroke and stock bore, you're only running 292 ci. The engine only had 8.8:1 compression, stock. With the 360 heads having larger chambers I'd imagine compression would go down to low 8:1 to high 7:1 on the stock stroke. Maybe the stock pistons with the larger stroke and bigger heads would be happy enough to allow everything to clear and compression to be reasonable?

Block's the same between 273, 318, and 340 with exception of bore. Running a 4" crank or the 3.58" 360 crank in a 273 will be just like running it in a 340 except for the pistons. Nothing special below the pistons.

Pretty much about the 360 heads. You're typically talking about 68cc+ chambers compared to 62cc+ chambers, then with thicker head gaskets common- down in the low 8s with stock 2bbl pistons. I'd be curious how easily you could get away with stock pistons in a stroker with the makings of big compression drops that are not uncommon.