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If these #s are correct these puppies are in W8-9 territory. I better wait before I bolt the Indys on the new R3 shortblock I have on the stand right now!! 
Even though they are in W9 territory they are a 59° Head ,well they pull the same RPMs as a 48° block?
Just make it bigger, like 440-470 ci and you don't have to worry about the RPMs. It will make a ton of torque, more horsepower and operate in the same RPM range. 
What block are you a boy that big. Lolol we're [Edited by Moparts - Family Friendly Site - Keep it clean] lolol
40cfm short of bretts big port w8's but still a shot in the arm for sbm guys  O and almost forgot ritter blocks dont work they are junk... A waste of good metal 
In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
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