Well this was set on the back burner as I waited for parts. It should be up and running soon with a 460 piston, Isky cam, and internally balanced crank. The weights needed were less than the 460 I think in part due to it's massive crank. I removed a lot of weight from the crank on the pin side and the counter balancers are hefty. I guesstimated the size of the weights I would need and overshot plenty. Several hours using a grinder later it is closer. A little fine tuning and should be alright. Still need to port the head. I'm using the valve springs and locks/retainers from a 15 hp Kohler OHV and chrome moly pushrods. Will need to build a adapter for the coil. Should be running by weekend.
Lester