I have a cam it's a speed pro PRT# CS-1152R
Intake duration 222*, Exhaust duration 232*, Intake lift .479, ex. lift .501, Cam lift intake .319, cam lift ex. .501
With 1.5RR's 114* LSA

I want to go with 1.6 RR's but have no idea of what springs to go with?

Also do I need new pushrods or anything else?

 

Well if don't go with 1.6 rockers you can get some LT4 springs and be OK....they are good to .525 lift. However if you go with the 1.6's your lift will be right around .534 so you will need something different. I know the Crane 10308-1 kit will work ( that's what I'm running ) no machining to heads required good to .600 lift. The EX612's from C. Motor Sports will work also...do a search and you'll find some other options.

 

You need to use the info on your Cam Spec Card to see what strength springs you will need to support the cam. With those specs, I assume that you can go with a good quality single spring that will fit your stock seats.

As far as push rods, as long as the rollers don't call for a longer or shorter rod and you are planning on using self-aligning RRs you can use non-hardened rods. If you opt for non-self aligning RRs you will need to get hardened push rods, since the guide plates on non-self alinging RRs may jeopardize non-hardended rods. I use hardened rods even though my RRs are self-alinging. Just gives me a bit of insurance.JMHO