I think that Lunati or Bullet R34/35 combo would make a nice SR street cam with Iron heads. IRC..The Lunati grind your looking at is a .0175” lash ramp design, meant to run .025” lash. It has some “whirl” sound to it, and normal SR clatter, there will be no mistaking that it has a SR cam in it, but they work well. I don’t think it would have much issue out running a SP2 with iron heads.
Personally though, for solid rollers on the street with iron heads, my favorite is the modernized Ultradyne Bullets .3832” profiles. The iron heads don’t expand much, and run tighter lash (.004” to .014”)so the lifters don’t hammer on the cam. But still have a decent sized lash window for tuning and street use. They don’t take much spring pressure, and are easy on parts.
Tim at Bullet suggested the .3823” SR grind to me a few years back and we really like them. He calls it a modified HR grind. It works with very well with HR or SR lifters, with SR lifters it is actually quiet enough that it you can barely hear that it has a roller cam, even with a pretty quiet exhaust. IRC they go down to as small as 228* and .050” and into the 260*@.050” in 2* increments on their CNC program. Tim will tell you the specs on the cam after the lash is taken out, so you don’t need to guess, and match it ip to your combo. Can get it in 4/7 swaps too.
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