I've been liking beehive springs because they provide plenty of clearance for adjustable rockers, have a smaller, lighter retainer and are suppose to control spring harmonics better than conventional springs. Just gotta do research to find a spring compatible with your cam application and existing valve spring installed height, which tends to be around 1.67" for an OEM small block. But you have a little wiggle room by juggling + .050" locks and/or retainers. Taller valves are available too if you need to replace them.
Is it a new or used cam? It's a pain, but with conventional lifters, I always broke a cam in with OEM springs or removed the inner spring in dual applications. Then swapped the final stuff in afterwards.
Last edited by Locomotion; 05/30/14 08:18 PM.