Combustion chamber CC's Chart ??

[Dodgy Dick]

Has anyone got a 273, 318, 340 J, 360 J LA cylinder head combustion chamber volume comparison chart or advice.
TKS,
R

 

[Dodgy Dick]

Somebody please !

 

[heyoldguy]

If there is such a thing it wouldn't be accurate. You have to cc the cylinder head to know for sure. Production chamber cc's were all over the map.

 

[Dodgy Dick]

Well a 318 must be demonstrably smaller than a 340 or 360 but I realise there is a wide margin in cc accuracy on all.
R

 

[Big_John]

Well a 318 must be demonstrably smaller than a 340 or 360 but I realise there is a wide margin in cc accuracy on all.
R

It's about the same.

Since that was from memory, I did a quick search and the only place I could come up with numbers for a 318 head was here: Small Block Cylinder Heads 'Stock Specs'

 

[Dana]

Do you have a specific casting # in mind?

 

[Dodgy Dick]

Yes Sir, 340/360 heads 3671587 H and 367587 M and 3418915 H Versus 318 heads 2843675.

 

[Dana]

I wouldn't get too hung up on that letter at the end. This chart will get you in the ballpark. Its not wrong from my experience. I've personally cc'd and documented 1971 915 heads with .010 milled off @ 71cc, 1990 302 heads milled .010 @ 59.6-61.4, and magnum heads shave .010 @ 64cc

 

[Dodgy Dick]

I wouldn't get too hung up on that letter at the end. This chart will get you in the ballpark. Its not wrong from my experience. I've personally cc'd and documented 1971 915 heads with .010 milled off @ 71cc, 1990 302 heads milled .010 @ 59.6-61.4, and magnum heads shave .010 @ 64ccView attachment 137678

G'Day Dana, Thanks the info which is a pretty good guide, so helpful and thanks muchly, R