the LT4 hotcam has 112 seperation, not duration. the 112 is great for midrange torque. and makes good great power while still having good idle and not confusing the computer.

 

The duration of the LT4 hot cam is way too much for the 305. Your rpm band would be like 3500-4000+ to make any kind of power and its really pointless when the bone stock tpi is good to 4800 rpm at most. The heads would be another limiting factor as it would not be able to breathe good enough for that cam. The springs on the heads is another issue. You need to look at a smaller cam like the crane 2030.