Ford Muscle Cars Tech Forum banner

1 - 2 of 2 Posts

·
Registered
Joined
·
3 Posts
Discussion Starter #1
After having my self-ported '69 351w heads
flowed, I was pretty disappointed with the
results until I found out they flowed 'em at
25 inches! Is there a formula to use to
convert these results to the standard 28
inches? I've looked all over and am coming up
empty. I tried a multiple of 1.12 ( 28 divided by 25 )which improved the numbers somewhat but I have a feeling that the
calculation is not a linear one. After finding this board, I haven't found a reason to go back to any of the others I used to check out. This is by far the most informative site on Fords I've ever seen!
If anyone knows how to do this conversion or
where I can find this info, I would really appreciate it. Thanks in advance!
 

·
Registered
Joined
·
221 Posts
Multiply your flow numbers by 1.0583 to convert from 25" to 28" of H2O.
 
1 - 2 of 2 Posts
Top