I'm hoping to get some recommendations for valve springs. Engine is a 440 with Mopar performance 292 .509 cam, 3/8 pushrods, Hughes 1.6 rocker arms. Heads are #452 cast iron, ported and flow 276 at .540 lift. Valve guides have been cut for PC valve seats so plenty of clearance for this lift. I presently have a set of fresh Comp 911-16 springs. With the Comp springs I have plenty of room before coil bind comes into play. Wondering if the higher ratio rocker arms will require a stiffer spring. Thanks in advance for any assistance.
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