Hey all i've got a zz4 350 crate motor and would like to throw in a set of 1.6 RR's but i was told i would have to also change the springs anyone know what kind of springs i would need?

thanks

 

If youre referring to 1.6 rocker arms, you should be fine, as long as you dont have a big cam in there. You shouldn't need to change anything. I would do some reasearch on the total lift capacity of your heads and your cam size. Do the math before you do anything to make sure you can take it (divide total cam lift by 1.5 then multiply by 1.6. Check this figure against the bind height of your springs). If you do have to change springs, its not hard, just pretty annoying while the heads are on the engine.