a 4.25 crank with a 2.2 rod journals is about perfect for your application. It will fit with the internal oil pickup. A 4.375 might fit, depending on the block, so had the hole a little farther out. 700-800 horse should be easy with the right cam and heads, and decent compression.
Mickm, I'm sure there is a reason you went with a small cam like that, but I think you are leaving 100 horsepower on the table.
Yes, I defiantly am. As I mentioned in the last post, long conversations with Tim. In the end we went with that cam because:
1) I didn't want to be messing with new lifters all the time. So I have good lifters and a relatively mild cam with mild ramps.
2) I wanted it to be drivable, my version of drivable. Car gets driven a lot at times, about to take it down to LA, ~400 miles. With the 2X4's I would get ~14mpg on the highway. Not bad. Will be interesting to see what it does with the six pack.
3) I can only fit 275/60 tires under there. As it is these are useless in 1st and 2nd. I didn't plan on anymore frame modifications, so knew I wouldn't even be able to hook this power well, so with the above 2 factors, this was good enough for me!