273 and 302 heads

[Mikes270dart]

does anyone know what the CC for the stock heads are, In other words will compression go up or down when replacing stock 273 heads with 302 heads?

 

[1wild&crazyguy]

my bone stock 302 heads measured 64cc's, they are like the 1st 'as cast' heads to actually measure as advertised.lol

 

[65TerrorCuda]

My '65 273 2-bbl heads were about 66cc, the '85 2-bbl 302's were 64cc, so after the 318 head gasket it's pretty close to the same.

 

[66fs]

The largest chamber of my 273 was about 65cc. Had them milled .040 to get to 57.4? Should be very close to the same chamber size.