Is this stock 1970 440 a magnum 375 HP or a non magnum 1970 350 HP 440 motor?
Either way shoot for between 105 to 102 degrees on the intake lobe center in relation to top dead center using the 4 degree keyway on the crankshaft gear
Make sure and check the cam timing, DO NOT ASSUME that when you align the dots the cam timing is correct
I've had several different sets of Cloyes True Roller 440 three bolt timing sets that had the cam dot position between two teeth on the cam gear, if I aligned the cam dot to the driver side of the motor it made the cam timing 12 degrees retarded in the 4 degree advance position if I aligned it so the cam dot was to the passenger side of the crank dot it was almost no advance or retard on the cam timing
Trust and then always verify