As many of you are aware, Im going from stock heads to Vortecs. Ive heard I have to switch pushrods. Do I use the stock pushrods or the ones that came with the vortec heads? The vortec rods eyeball out at 7.80, (mic only goes to 4, I ruler measured to 7 and then mic'd the .80....sloppy, but a ball park figure)

I havnt pulled the stock rods yet so Im not sure of the OAL.