LS CNC porting service
Customer supplied LS OEM Castings
241, 862, 706, 243, 799, 317, 821, 823, 5364, LSA
If reusing your oem valves,
choose reuse valve option relative to your casting style
Porting service includes
CNC port intake and exhaust runners
performance 5 angle valve job
Surface mill to customer specs
price per pair
Wilkes Performance assumes no responsibility for damage if the end user builds an engine without properly verifying he has enough piston to valve clearance (depth and radial clearance both checked). It is recommended for a minimum depth of .080″ on the intake valve and .100″ on the exhaust with a radial clearance of .030″ minimum around the perimeter of each valve. It is the customers responsibility to verify proper piston to valve clearance.
On occasion a 100% CNC ported head might have casting areas left “as cast”.This is due to core shift and this in no way affects performance.