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I have done a lot of search and education on heads and cams and when looking at flow and average flow numbers along with combustion chamber design --- THEN ---------
ET Performance heads are the best (with only 10.5 degeree) The 215 or the 225 cc. The next best and most used are 225cc ported Trick Flows or for about $500 less the 220cc as cast heads ( you only lose a little flow).
It looks to me like the 4 top all out drivable cams are in this order Streetsweeper, VRX5, VRX6, or Streetsweeper ET
Now once again we are talking 500+++HP and very streetable with GOOD tune!!!!
There are cams that give even more, but are a little questionable as to drivability
Hopes this Helps
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