Water pump bolt size 1985 T-Type

I put an electric fan on my car and replaced the water pump and timing chain. Does anyone know what size bolts I need to mount the pulley back on the water pump with out the fan on it?

Anthony P

Active Member
I'm thinking that without the fan clutch, the same bolts as 86-87 will work. the thickness of the pulley stamping for both v-belt and serpentine belt should be the same.

5/16-24 x 1/2" long. not easy to find 5/16 fine thread. I used ARP 751-0560 which are 5/16-24 x 0.56" long - 5 pk bought from Summit.
doesn't come up if you look by year, make, model - have to look up by size if don't have part #.