Rockabillyrat
SlIgHtLy StUpId.
Both. I'm waiting to hear back from the machine shop I've been working with on custom big plunger head and rotors. I can squeeze up to 130cc @ 2800rpm out of a stock 6.5 DB2 with the .310 H&R. But I have some .370 and .350 H&Rs I'm working on. But I had to send them back to the machine shop because of an issue I had with the .350 so hopefully they can figure it out because I have a .450 on the shelf for Nates build.
Will I believe I only got 60cc out of your pump. That 110cc will be a fun upgrade for you hummer!! I ill let you know when its done, The machine shop has the .310 H&R for your pump. I want to get a reman in yours for testing.