Mercury Cougar Owners banner

1 - 2 of 2 Posts

·
Registered
Joined
·
304 Posts
Discussion Starter #1
In all the books i have here at my house all of them give a compression ratio of 9.3 for all 289 2V motors 65 to 68. But my 68 motor has 63cc chambers and the 65 to 67 heads have 54cc chambers. What am i missing here? I calculate 63cc to be 8.4. My question is do you think the books are wrong? Does anyone know what the ratio should be for a 68 2v 289 should be?
 

·
Registered
Joined
·
913 Posts
Comp. 68 289 2V 8.7:1 - 302 4V 10:1
 
1 - 2 of 2 Posts
Top