Mine are older KB heads. Hopefully my 496 with the help of a 10-71@12 pounds of boost and the right cam it will make around 1100 streetable hp.



'33 Plymouth 5 Window Coupe Blown Aluminum HEMI w/bolt ons (under construction) '69 Chrysler 300 Convertible 375 HP 440 '71 Plymouth Duster 360 W/EFI (Wife's Ride) '12 Ram MegaCab Dually 6.7 Cummins