Correct 5X4 Cragar SS 7/16 Lug Nut Torque?

I've started out at 65 ft. lbs. but it sounds like I'm too light. I've used unilug Cragars on my B Body cars in the past and various times have had them come loose. I only decided on 5X4 Cragar SS's for my Barracuda because they are not unilug but after just impact and lug wrench tightening the other day, the fronts started coming loose. Started to rethink those Cragar SS wheels again. When I had them on my Roadrunner, I was constantly checking the tightness of them and got tired of that so I went to Magnum 500's and sold the unilug SS's. Cragar SS's are the only wheels I have ever had a problem coming loose.