Valve spring limitations vs Cam selection

Thanks Mark. The grind Oregon Ken recommended is 1341 - 218/224@ .050, 270/[email protected], 110/106, 482/482. There is also an identical grind-1634 that has a lift of 528/536. The lift is using 1.6. Notation says XR270HR. Since that is a Comp grind I looked at the dyno chart on their site which uses a very similar (displacement, CR, head, intake, carb), albeit chebby engine. The chart looked good but noticed their XR276HR (SBM cam XR274HR) that had slightly more power and nice, flat torque curve. The Oregon grind for that cam is 1990. 224/[email protected], 276/[email protected], 112/108, 510/510 -1.6. The 1990 was something based on another member @TrailBeast running the 1341 stating he would have bumped to the 224/230. The other two I was looking at were the Lunati 715 (Truestreet) @motorpirate 213/219, 264/[email protected], 112/106, 485/485.
Another interesting cam is the Howards 77195-10 221/225, 274/278, 110/106, 507/[email protected]. I'll have to run the numbers and see what I get for cylinder pressure.