Which spring would you use on a .600 lift hydrolic cam. daliy driver. 6300 shift points. I was told Isky is making a good spring if so do you know the part #? Thanks Rich

 

some more info I have a .563 lift cam now and am installing 1.8 crane rockers that will give me .594 lift at the valve. I am looking for what will be safe. Number one won't break. Number two won't be too much pressure on the stock lifters. Thay can be dual springs but just not too much pressure on the seat. About 130#s to 150#s should be ok on the seat and 350#s open. Ant more info would be great. Thanks Rich