[Michael C Henry]

You would think the Cam manufactures with all the information they have before they reccamend or make a cam ,would be able to reccamend a power valve range that would work.They surely know about how much vacume an engine will maintain with what cam and carb setup.When you ask for a reccamendation they ask every questio upto and incluning what you had for lunch.
Mine is a 427 Ford side oiler aluminum Dove Canadian Super Cobra Jet heads, 11.5 -1,Dove tunnel wedge 2x4 intake two 600 cfm Holley 4160 carbs.Comp Cams solid lifter cam 252° at .50" and .598"lift>That is close enough.Oh sealevel.