Heads:
http://www.worldcastings.com/prods_pages/025350.htm
Warhawk LS7X 12° Aluminum LS7/C5R Cylinder Heads (2.200" x 1.600" Valves)
Part # Application Description Valve Spring Specs Max Lift Chamber
025350 Bare Head 255cc None None N/A 64cc
025350-2 Flat Tappet/Hyd Roller 255cc Manley Race Master 1.437"Dual125#Seat .600" 64cc
025350-3 Solid Roller 255cc Manley Severe Duty 1.550"Dual200#Seat .700" 64cc
025400 Bare Head 255cc None None N/A 72cc
025400-2 Flat Tappet/Hyd Roller 255cc Manley Race Master 1.437"Dual125#Seat .600" 72cc
025400-3 Solid Roller 255cc Manley Severe Duty 1.550"Dual200#Seat .700" 72cc
http://store.summitracing.com/egnsea...38998+42948670 81+400240+4294908216+4294867028+4294867079+115+429 4806411
World Products Warhawk 12 degree LS7X Cylinder Heads
Cylinder Head, LS7X, Aluminum, Assembled, 72cc Chamber, 255cc Intake Runner, Chevy 1997-2006, 5.7L, Each
12/23/06 $1,181.95