Vortec's or Aluminum heads? (NKB/Enforcers)

Swapping from Vortecs to NKB aluminum heads for a upcoming dyno test Please like and Subscribe 500 likes and we will dyno test a single plane on this! 406 Cam (summit racing) Summit Cam https://autosalesinc.pxf.io/e1Yno6 Vortec 406 dyno test    • 406 Budget Build Dyno Results (Vortec Heads)   NKB heads    • Affordable Aluminum SBC Heads? Skip White ...   Logey engine (getting the vortec heads)    • Budget Vortec 350 (My Apprentice's First b...