Do i have the wrong pump or need a different crank pulley? This is in a 71 duster w/ 340.
if there was a fourth groove on the crank pulley we would be super close to the fan....

next pic

It appears the wrong year pump is in use, looks to be a Saginaw for a truck w/AC application mid 80's-90's, you need the eariler "bottle" top Saginaw, your brackets appear correct for the Saginaw application,...a Federal or TRW pump requires different brackets

Mike

i will look into that. i have a few other pumps laying around and i never took notice. i thought the pumps were all the same just different brackets

Thank you!

that looks like a gm model...