I Have A 72 With A 396, Long Water Pump, And Keyway Steering Pulley. The After Market Pulleys On Right Now Are Junk From A Previous Owner. I Am Looking For A 2 Groove Crank, 1 Groove Water Pump And A 1 Groove Steering With Keyway. I Also Donot Have A/c Or Smog Pump. Am I Barking Up The Wrong Tree As Far As Number Of Grooves? I Also Want To Make Sure The Diameters Are Correct Due To Previous Posts About Smaller Diameter Pulleys Playing Havoc With Water Temps. Due They Have To Be Original No. Just Looking For Some Good Black Factory Type Pulleys. I Have Found These Part Numbers On Ebay But Am Unsure They Are Correct. Water Pumps 3947824 And 3976060, Crank 3955291 And Steering 3941105. Thanks Dave

^ +1 Me too I am in the same boat as you
I am in the process of looking at salvage yard to get used.
I come across these codes for pullys but dont know what they mean.
btw I have 70 350
Alt cz
ps dd
crank cg
fa bv