I am willing to machine delivery valves if anyone is interested, on a basis that your stock delivery valves are modified, no core exchange. I have done quite a few sets, better results than "full cuts" or "laser cuts" as far as streetability and response. $175 total price includes return shipping, all delivery valves and seats are lapped before return. These are competition style, I would not recommend them for street use, but they have been used in daily drivers.

Results from 180hp P7100 on the test stand;

191's - 460cc's
Mack - 470cc's
Laser Cuts - 550cc's
This Version - 550cc's

 

this version...

 

very cool You wouldent happen to have a set that flows more fuel than a full cut would you?

 

Sure, take them out. Only problem is the lack of velocity and retard in timing advance.

 

How important is velocity and timing advance? sounds overrated to me I would rather have twice the fuel flow...