Thread: 23 deg heads
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Old 02-10-2008, 05:44 AM
  #3  
SST4530
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DYNO TECH
 
Join Date: Feb 2004
Location: Leonard, Texas
Posts: 414
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I agree the 227's are the best 23 deg head. I also have them on my 409, you can have more work done to them and they will flow about 370 cfm on the intake. Any more than that and you need some 18 deg stuff.
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