Help with pulley I.D.

[L78steve]

What is the application for a #3956666 pulley?

[Mr70]

That's a 2 groove crankshaft shallow used on ALL 1969-75 Small Block Passenger & Chevelle & Nova & Camaro-(except 302),that came equipped w/P/S but without A/C.

Emil

[L78steve]

Thank you mr70.