Need help with cam selection

PRH said

That Smith cam will work fine.

If the heads were previously run with a solid roller, the springs are likely way too stiff for a flat tappet cam.

Have them tested to make sure the parts are compatible.

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yes I was going to remove these springs and get the proper springs, thought about running the same cam as the guy was selling it also but figured I would weigh out my options and with something a bit more mild than he had he was running a .630 lift cam