Jimmy Six once told me he was making, if I remember right, about 600 Hp on fuel. This will be a 320 Jimmy with a stock head. If the planets align, the Gods of the flow bench smile, maybe 450 with a tailwind. The expected speed, if all goes well, would be in the 180 range, weight will be around 3200# I'm not too worried about shock loads, it's the potential warping of the case and subsiquent gear binding that I fear. There is always hope that it will live as is. I'm really just giving JD a chance to dig out his old combo's so I can get a look at them. Care to elaborate on the lubrication part a bit more?