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Old 01/19/2011, 11:18 AM   #3

Location: Apple Valley, CA
Joined: Apr 09
eBay: tcherry3
Posts: 11

Originally Posted by Mosesatm View Post
Check out the volume difference between the '68 2V and 4V heads (63 vs. 53.5).
The 289 2V heads create a compression ratio of roughly 8.5, while the 302 4V heads are in the 9.5 range.
That was why Ford marked them! The 68 4V heads are a nice little bump on 302's. Hawkrod
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