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  1. Iron Dport Roller Valve Spring suggestions wanted
  2. Hey Big Shots, We Gots Our Own Forum!!!
  3. Performance Numbers with D-Ports !!
  4. best plugd for d ports
  5. "cleaning up" iron d port chambers"
  6. Question about valve shrouding
  7. combustion chamber volume
  8. Question about valve length
  9. easiest and fastest way to elongate push rod holes?
  10. Guideplate modification??
  11. questions
  12. 6X-8 heads on a 400
  13. So quick milling question
  14. Recommended Machine Shops
  15. Before big valves/after big valves
  16. need advise
  17. head help
  18. .060 .080's ?
  19. 142's or 143's
  20. D-ports against BBCs...
  21. 670's
  22. Valve jobs on iron heads - 2 angle
  23. 061 heads
  24. 4x
  25. ok, who,s running prec. auto. special.
  26. What is the fastest (MPH) a D port has run?
  27. Modifying 670 head chambers