What size are 302/351w water pump bolts?

[kck351w]

I have a 71 351w, and i need water pump bolts without going to the junkyard. i'd rather go to a hardware store or home depot with the correct size because my car is at the transmission shop and i need em asap to move forward. any and all help would be appreciated

 

[4G-KDMP]

All WP bolts for a 302 are 5/16-18 pitch.... the length depends on where the bolt is placed.

 

[65ShelbyClone]

5/16-18 thread with a 1/2" hex.

 

[kck351w]

thanks. i got em in. now i gotta get my holla to bolt up to my aod.

 

[jrichker]

The studs are a Motormite item available at your local Advance Discount auto Parts store.

Motormite Water Pump Stud Kits for Ford, Lincoln and Mercury cars and trucks w/3.8L, 4.6L, 5.0L, 5.8L.

Part Number: 23744