Hey all,
I'm in the middle of a great debate within my own mind. I'm gonna assemble the 355 shortblock this week, and want to install it next week while I'm on Spring Break.
I'll be using World Products 58cc heads; they're currently on my 305 and only have about 25K miles on them. When I bought them, I told the vendor what my cam profile was in the 305, and they spec'd a set of springs for a max of .480 lift (that's what it says on my receipt anyway). Now, if you look at the tech specs for the World heads on their site, it says they come with springs good to .560 lift. I'm sliding a ZZ4 cam in, which is .474/.510.
SO, should I assumed they changed the springs over what they come with from World, or not worry about it and run it?

If I should change 'em, anyone have a budget-friendly recommendation on a set of springs, and how tough are they to change with the heads off the shortblock?